118 F.3d 199
1997 Copr.L.Dec. P 27,671, 43 U.S.P.Q.2d 1299

Donna R. HOTALING; William W. Hotaling, Jr.; James P.
Maher; Dorothy C. Sherwood, Plaintiffs-Appellants,
v.
CHURCH OF JESUS CHRIST OF LATTER-DAY SAINTS, Defendant-Appellee.

No. 96-1399.
United States Court of Appeals,
Fourth Circuit.
Argued Jan. 29, 1997.
Decided June 30, 1997.

[201] ARGUED: Hunter Craycroft Harrison, Jr., McLean, VA, for Appellants. Michael Abbott Grow, Vorys, Sater, Seymour & Pease, Washington, DC, for Appellee.

Before HALL and LUTTIG, Circuit Judges, and BUTZNER, Senior Circuit Judge.

Reversed and remanded by published opinion. Senior Judge BUTZNER wrote the majority opinion, in which Judge LUTTIG joined. Judge HALL wrote a dissenting opinion.

OPINION

BUTZNER, Senior Circuit Judge:

In this appeal we hold that a library distributes a published work, within the meaning of the Copyright Act, 17 U.S.C. §§ 101 et seq., when it places an unauthorized copy of the work in its collection, includes the copy in its catalog or index system, and makes the copy available to the public. Because the district court ruled that these actions, by themselves, were insufficient to constitute distribution, we reverse the district court's summary judgment for the library and remand this case for further proceedings.

Summary judgment is appropriate only if the record reveals no genuine issues of material fact and the moving party is entitled to judgment as a matter of law. Fed.R.Civ.P. 56(c). We review the entry of summary judgment de novo, applying the same standard as the district court. Stone v. Liberty Mutual Ins. Co., 105 F.3d 188, 191 (4th Cir.1997).

I

We present the facts in the light most favorable to the plaintiffs, Donna Hotaling, William Hotaling, Jr., James Maher, and Dorothy Sherwood (collectively the Hotalings). See Yarnevic v. Brink's, Inc., 102 F.3d 753, 756 (4th Cir.1996). The Hotalings compiled and copyrighted a number of genealogical research materials. The validity of the copyrights is not at issue at this stage of the litigation. The Hotaling research materials were published in microfiche form and marketed by All-Ireland Heritage, Inc. At some point, most likely between 1985 and 1989, the defendant, the Church of Jesus Christ of Latter-Day Saints (Church), acquired a single legitimate copy of the microfiche and added it to its main library's collection in Salt Lake City, Utah. Sometime before 1992, the Church made microfiche copies of the works without the Hotalings' permission and sent the copies to several of its branch libraries, located throughout the country. The legitimately acquired copy had a black background, and the copies that were made by the Church had purple backgrounds.

In July, 1991, Donna Hotaling learned that the Church was making copies and placing them in its branch libraries. She contacted the Church and demanded that it stop this activity. After receiving her complaint, the Church recalled and destroyed many of the copies that it had made. According to the [202] affidavits submitted by the Church, it did not make any copies after 1991, and there is no evidence to contradict that assertion.

In 1992, All-Ireland Heritage, Inc., sued the Church for copyright infringement based on the Church's copying and distribution of the Hotaling works. The district court dismissed the action because All-Ireland Heritage, Inc., did not own the copyright. As a result of the lawsuit, the Church became concerned that nine of its branch libraries might still possess copies of the Hotaling works. In October, 1993, the Church sent a memorandum to those branch libraries asking them to search their microfiche inventories for copies of the works. Six libraries found and returned one microfiche copy each. Upon receipt, the main library destroyed these copies.

In 1994, Donna Hotaling visited a branch library in Rhode Island. During her visit, she discovered a paper copy of one of the Hotaling works. According to the Rhode Island library director, a patron made the copy and left it in an infrequently used section of the library. The director had been unaware, and believes the other staff members had been unaware, of the copy's existence. When the copy was discovered, the director destroyed it. Prior to April 1992, the Rhode Island library had returned to the Church's main library the microfiche from which the patron apparently had made the paper copy.

In 1995, Donna Hotaling went to the Church's main library in Salt Lake City. There she observed that the library maintained a microfiche copy of the Hotaling works in its collection. She examined a portion of the microfiche and noticed that it had a purple background. The Church acknowledges that the single copy it keeps in its collection is one that it made. The library retained this copy, the Church explains, because the copy it originally acquired was destroyed inadvertently.

In August, 1995, the Hotalings filed this suit. Following discovery, the Church moved for summary judgment, arguing that the record did not include any evidence of an infringing act within the three year statute of limitations. The district court granted the motion, and the Hotalings appealed.

II

The applicable statute of limitations bars civil copyright actions brought more than three years after the claim accrues. 17 U.S.C. § 507(b). "A cause of action for copyright infringement accrues when one has knowledge of a violation or is chargeable with such knowledge." Roley v. New World Pictures, Ltd., 19 F.3d 479, 481 (9th Cir.1994). A party does not waive the right to sue for infringements that accrue within three years of filing by not asserting related claims that accrued beyond three years. Roley, 19 F.3d at 481 (quoting Hoey v. Dexel Systems Corp., 716 F.Supp. 222, 223 (E.D.Va.1989)). In addition, under the prevailing view, a party cannot reach back, based on acts of infringement that accrued within the limitations period, and recover for claims that accrued outside the limitations period. Id.; see also Stone v. Williams, 970 F.2d 1043, 1049-50 (2d Cir.1992); 3 M. Nimmer & D. Nimmer, Nimmer on Copyright, § 12.05 at p. 12-110 (1996); contra Taylor v. Meirick, 712 F.2d 1112, 1118-19 (7th Cir.1983).

Hotaling filed this lawsuit in August, 1995. As a result, the statute of limitations bars recovery on claims that accrued before August, 1992. It is undisputed that any claim based on the Church's copying of Hotaling's works, which ceased by 1991, or on the original distribution of those copies from the main library to the branch libraries, which took place in or before 1991, is untimely. Those claims accrued in 1991 when Hotaling learned that the Church was copying and distributing her works.

In support of its summary judgment motion, the Church argued that there is no evidence of an infringing act within the limitations period. The district court found that the evidence, construed in Hotaling's favor, showed at most that the branch libraries possessed copies within the limitations period. The court granted the motion because it concluded that, without any evidence of copying or specific instances of distribution to the public within the limitations period, Hotaling could not prevail.[203]

III

A copyright infringement is a violation of "any of the exclusive rights of the copyright owner." 17 U.S.C. § 501(a). One of those exclusive rights is the right "to distribute copies ... of the copyrighted work to the public by sale or other transfer of ownership, or by rental, lease, or lending[.]" 17 U.S.C. § 106(3). Generally, as permitted by what is known as the first-sale doctrine, the copyright owner's right to distribute a copyrighted work does not prevent the owner of a lawful copy of the work from selling, renting, lending, or otherwise disposing of the lawful copy. 17 U.S.C. § 109(a); see Professional Real Estate Investors, Inc. v. Columbia Pictures Industries, Inc., 508 U.S. 49, 52, 113 S.Ct. 1920, 1923-24, 123 L.Ed.2d 611 (1993). For example, a library may lend an authorized copy of a book that it lawfully owns without violating the copyright laws. See H.R.Rep. No. 94-1476, § 109, at 79 (1976), reprinted in 1976 U.S.C.C.A.N. 5659, 5693 and excerpted following 17 U.S.C.A. § 109. However, distributing unlawful copies of a copyrighted work does violate the copyright owner's distribution right and, as a result, constitutes copyright infringement. In order to establish "distribution" of a copyrighted work, a party must show that an unlawful copy was disseminated "to the public." 17 U.S.C. § 106(3); see National Car Rental v. Computer Associates, 991 F.2d 426, 434 (8th Cir.1993); 2 Nimmer, § 8.11[A] at 8-137.

The Hotalings assert that the Church's libraries infringed their copyrights by distributing unauthorized copies of their works to the public. The libraries did not record public use of the microfiche. Consequently, the Hotalings concede that the record does not contain any evidence showing specific instances within the limitations period in which the libraries loaned the infringing copies to members of the public. But, they argue that proving the libraries held unauthorized copies in their collections, where they were available to the public, is sufficient to establish distribution within the meaning of the statute.

The Church, on the other hand, argues that holding a work in a library collection that is open to the public constitutes, at most, an offer to distribute the work. In order to establish distribution, the Church argues, the evidence would need to show that a member of the public accepted such an offer.

On this issue, we agree with the Hotalings. When a public library adds a work to its collection, lists the work in its index or catalog system, and makes the work available to the borrowing or browsing public, it has completed all the steps necessary for distribution to the public. At that point, members of the public can visit the library and use the work. Were this not to be considered distribution within the meaning of § 106(3), a copyright holder would be prejudiced by a library that does not keep records of public use, and the library would unjustly profit by its own omission.

IV

The Church argues that, even if holding a copyrighted work in a library's collection does constitute distribution within the meaning of the statute, there is no evidence showing that, within the limitations period, unauthorized copies of the Hotaling works were available to the public at any of its libraries. In response, the Hotalings point to the copy Donna Hotaling examined in Salt Lake City in 1995, the paper copy she found in Rhode Island in 1994, and the six copies that were returned and destroyed in 1993.

The Hotalings presented sufficient evidence to create a genuine issue over whether the copy Donna Hotaling examined in Salt Lake City was being distributed to the public in 1995. According to Donna Hotaling's personal observations, that copy was part of the library's collection, listed in the card file, and available to the public. In addition, she asserts that the copy she inspected had a purple background. Based on this evidence, a reasonable jury could conclude that the library held an unauthorized copy of the Hotaling works in its publicly-accessible collection within the limitations period. Because the evidence is sufficient to show that this potentially infringing copy was being distributed to the public as recently as 1995, it provides a timely basis for Hotaling's suit.

[204] Although the Church acknowledges that its sole remaining copy is not the one it originally acquired from All-Ireland Heritage, Inc., it maintains that the remaining copy does not infringe Hotaling's copyright because it is a replacement copy, authorized by 17 U.S.C. § 108. The Copyright Act does permit libraries to make a replacement copy of a copyrighted work that has been published, but only if the library "has, after a reasonable effort, determined that an unused replacement cannot be obtained at a fair price," § 108(c), and the library has complied with other pertinent provisions of § 108. Because the district court did not reach this issue, we decline to address it for the first time on appeal.

We turn next to the other copies that the Hotalings contend were distributed within the limitations period. Based on the evidence in the record, a reasonable jury could not conclude that the library distributed the Rhode Island copy to the public. According to the unrebutted affidavit of the Rhode Island library director, the paper copy was made and left behind by a library patron. Although the copy was later found in the library, there is no evidence to show that it was made part of the library's collection or listed in the library's catalog file.

Nor is there sufficient evidence to establish that the six copies returned and destroyed in 1993 were held out to the public within the limitations period. The evidence in the record does not reveal where the branch libraries found the six copies or whether those copies had been available for public use.

V

The Church asserts an alternative argument. It contends that, even if the library held an unlawful copy of the Hotaling works in its collection during the limitations period, any claim related to that copy accrued more than three years before this suit was filed in August, 1995. The Church points out that Donna Hotaling knew the libraries were adding the unlawful copies to their collections in 1991. With regard to the copy held in the main library's collection, the Church asserts that Donna Hotaling has known for several years that that copy, which had been made by the Church, was maintained in the library's collection as a replacement for the one it had purchased. In Donna Hotaling's deposition, she states that she was aware of the main library's replacement copy before 1992. Therefore, says the Church, the Hotalings action accrued prior to 1992, and the statute of limitations bars the 1995 suit.

The Church's argument is unpersuasive. "Each act of infringement is a distinct harm giving rise to an independent claim for relief." Stone v. Williams, 970 F.2d at 1049. As we decided in Part III, distribution occurs, within the meaning of § 106, when a library holds a copy in its collection, lists the copy in its card file, and makes the copy available to the public. In this respect, the Church distributed the Hotaling microfiche as late as 1995. As we explained in Part II, a copyright holder may recover for infringements that occurred within three years before suit was filed, even if earlier claims were not pursued. Roley, 19 F.3d at 481. For this reason, the statute of limitations does not present a bar to the Hotalings' remaining claim.

Moreover, even if we were to accept the Church's argument, it would not change the outcome. If, as the Church says, actual use by the public must be shown to establish distribution, no one can expect a copyright holder to prove particular instances of use by the public when the proof is impossible to produce because the infringing library has not kept records of public use. To reiterate, a copyright holder should not be prejudiced in this manner, nor should an infringer benefit from its failure to keep records. In this case, the Church's library did not record instances of public use of the Hotaling microfiche.

VI

The Hotalings presented evidence that suggests the Church distributed at its main library one potentially infringing copy of the Hotaling works to the public within the limitations period. For that reason, dismissal of [205] the suit based on the statute of limitations was inappropriate. Accordingly, we reverse and remand to the district court for adjudication of the Hotalings' surviving claim. If the district court finds that the Church complied with § 108, it should dismiss this action. If the court finds that the Church did not comply with § 108, it should conduct further proceedings on outstanding claims, including the validity of the copyright.

REVERSED AND REMANDED

K.K. HALL, Circuit Judge, dissenting:

I respectfully dissent. The statute specifically identifies the sorts of "distribution" that violate a copyright, and none of them fit this situation.

The owner of a copyright does not possess an exclusive right to "distribute" the work in any conceivable manner; instead, it has the exclusive right "to distribute copies ... of the copyrighted work to the public by sale or other transfer of ownership, or by rental, lease, or lending [.]" 17 U.S.C. § 106(3). The Church did not sell or give an infringing copy to anyone. The Church did not "rent" or "lease" a copy; indeed, the public may use the Church's libraries and all of their contents for free.

"Lending" is the only remaining candidate. Because they are for research, the libraries do not permit materials to be checked out and used by a member of the public off-premises. Do the libraries nonetheless "lend" a work each time a patron consults it? I think not. The patron might report that he "used" or "looked at" the work, but he would not likely say that it had been "lent" to him.

Moreover, in this case, the plaintiffs do not even have any evidence that anyone used or looked at an infringing copy during the limitations period. The majority suggests that such evidence might have existed had the libraries--unlike all or nearly all others--recorded each and every use of its millions of volumes. It might have, but it does not.

In closing, I should say that I have some sympathy for the result reached by the majority. A library's allowing on-premises public use of an unauthorized copy should probably infringe a copyright. Nonetheless, I believe that current law does not deem this sort of use an infringing "distribution," and that, in any event, there is no evidence of such use in this case.

I would affirm the judgment of the district court.

[1153] Russell J. Frackman and Jeffrey D. Goldman, Mitchell, Silberberg & Knupp LLP, Los Angeles, CA, Jeffrey N. Mausner, Berman, Mausner & Resser, Los Angeles, CA, Daniel J. Cooper, Perfect 10, Inc., Beverly Hills, CA, for plaintiff-appellant Perfect 10, Inc.

Andrew P. Bridges and Jennifer A. Golinveaux, Winston & Strawn LLP, San Francisco, CA, Gene C. Schaerr, Winston & Strawn LLP, Washington, DC, for defendant-appellee and cross-appellant Google Inc.

Mark T. Jansen & Anthony J. Malutta, Townsend and Townsend and Crew LLP, San Francisco, CA, for defendants-appellees Amazon.com and A9.com, Inc.

Fred von Lohmann, Electronic Frontier Foundation, San Francisco, CA, for amicus curiae Electronic Frontier Foundation, American Library Association, Medical Library [1154] Association, American Association of Law Libraries, Association of Research Libraries, and Special Libraries Association in support of Google Inc.

Victor S. Perlman, of counsel, American Society of Media Photographers; Nancy E. Wolff, of counsel, Cowan, DeBaets, Abrahams & Sheppard, LLP; Robert W. Clarida and Jason D. Sanders, Cowan, Liebowitz & Latman, P.C., New York, NY, for amicus curiae American Society of Media Photographers, Inc., Picture Archive Council of America, Inc., British Association of Picture Libraries and Agencies, Inc., Stock Artists Alliance, The Graphic Artists Guild, American Society of Picture Professionals and National Press Photographers, in support of Perfect 10 on issue of Google's liability for the display of full-size images.

Eric J. Schwartz and Steven J. Metalitz, Smith & Metalitz LLP, Washington, DC, for amicus curiae Motion Picture Association of America, Inc. in support of Perfect 10.

Jonathan Band, Jonathan Band PLLC, Washington, DC, for amicus curiae Net-Coalition, Computer and Communications Industry Association, U.S. Internet Service Provider Association, Consumer Electronics Association, Home Recording Rights Coalition, Information Technology Association of America, and Internet Commerce Coalition in support of Google Inc.

Kenneth L. Doroshow and Linda J. Zirkelbach, Recording Industry Association of America, Washington, DC; Jacqueline C. Charlesworth, National Music Publishers' Association, Washington, DC; Robert W. Clarida, Richard S. Mandel and Jonathan Z. King, Cowan, Liebowitz & Latman, P.C., New York, NY, for amicus curiae Recording Industry Association of America and National Music Publishers' Association in support of neither party.

Appeal from the United States District Court for the Central District of California; A. Howard Matz, District Judge, Presiding. D.C. Nos. CV-05-04753-AHM, CV-04-09484-AHM.

Before: CYNTHIA HOLCOMB HALL, HAWKINS, and SANDRA S. IKUTA, Circuit Judges.

IKUTA, Circuit Judge:

In this appeal, we consider a copyright owner's efforts to stop an Internet search engine from facilitating access to infringing images. Perfect 10, Inc. sued Google Inc., for infringing Perfect 10's copyrighted photographs of nude models, among other claims. Perfect 10 brought a similar action against Amazon.com and its subsidiary A9.com (collectively, "Amazon.com"). The district court preliminarily enjoined Google from creating and publicly displaying thumbnail versions of Perfect 10's images, Perfect 10 v. Google, Inc., 416 F.Supp.2d 828 (C.D.Cal.2006), but did not enjoin Google from linking to third-party websites that display infringing full-size versions of Perfect 10's images. Nor did the district court preliminarily enjoin Amazon.com from giving users access to information provided by Google. Perfect 10 and Google both appeal the district court's order. We have jurisdiction pursuant to 28 U.S.C. § 1292(a)(1).^[1]

[1155] The district court handled this complex case in a particularly thoughtful and skillful manner. Nonetheless, the district court erred on certain issues, as we will further explain below. We affirm in part, reverse in part, and remand.

I

Background

Google's computers, along with millions of others, are connected to networks known collectively as the "Internet." "The Internet is a world-wide network of networks ... all sharing a common communications technology." Religious Tech. Ctr. v. Netcom On-Line Commc'n Servs., Inc., 923 F.Supp. 1231, 1238 n. 1 (N.D.Cal.1995). Computer owners can provide information stored on their computers to other users connected to the Internet through a medium called a webpage. A webpage consists of text interspersed with instructions written in Hypertext Markup Language ("HTML") that is stored in a computer. No images are stored on a webpage; rather, the HTML instructions on the webpage provide an address for where the images are stored, whether in the webpage publisher's computer or some other computer. In general, webpages are publicly available and can be accessed by computers connected to the Internet through the use of a web browser.

Google operates a search engine, a software program that automatically accesses thousands of websites (collections of webpages) and indexes them within a database stored on Google's computers. When a Google user accesses the Google website and types in a search query, Google's software searches its database for websites responsive to that search query. Google then sends relevant information from its index of websites to the user's computer. Google's search engines can provide results in the form of text, images, or videos.

The Google search engine that provides responses in the form of images is called "Google Image Search." In response to a search query, Google Image Search identifies text in its database responsive to the query and then communicates to users the images associated with the relevant text. Google's software cannot recognize and index the images themselves. Google Image Search provides search results as a webpage of small images called "thumbnails," which are stored in Google's servers. The thumbnail images are reduced, lower-resolution versions of full-sized images stored on third-party computers.

When a user clicks on a thumbnail image, the user's browser program interprets HTML instructions on Google's webpage. These HTML instructions direct the user's browser to cause a rectangular area (a "window") to appear on the user's computer screen. The window has two separate areas of information. The browser fills the top section of the screen with information from the Google webpage, including the thumbnail image and text. The HTML instructions also give the user's browser the address of the website publisher's computer that stores the full-size version of the thumbnail.^[2] By following [1156] the HTML instructions to access the third-party webpage, the user's browser connects to the website publisher's computer, downloads the full-size image, and makes the image appear at the bottom of the window on the user's screen. Google does not store the images that fill this lower part of the window and does not communicate the images to the user; Google simply provides HTML instructions directing a user's browser to access a third-party website. However, the top part of the window (containing the information from the Google webpage) appears to frame and comment on the bottom part of the window. Thus, the user's window appears to be filled with a single integrated presentation of the full-size image, but it is actually an image from a third-party website framed by information from Google's website. The process by which the webpage directs a user's browser to incorporate content from different computers into a single window is referred to as "in-line linking." Kelly v. Arriba Soft Corp., 336 F.3d 811, 816 (9th Cir.2003). The term "framing" refers to the process by which information from one computer appears to frame and annotate the in-line linked content from another computer. Perfect 10, 416 F.Supp.2d at 833-34.

Google also stores webpage content in its cache.^[3] For each cached webpage, Google's cache contains the text of the webpage as it appeared at the time Google indexed the page, but does not store images from the webpage. Id. at 833. Google may provide a link to a cached webpage in response to a user's search query. However, Google's cache version of the webpage is not automatically updated when the webpage is revised by its owner. So if the webpage owner updates its webpage to remove the HTML instructions for finding an infringing image, a browser communicating directly with the webpage would not be able to access that image. However, Google's cache copy of the webpage would still have the old HTML instructions for the infringing image. Unless the owner of the computer changed the HTML address of the infringing image, or otherwise rendered the image unavailable, a browser accessing Google's cache copy of the website could still access the image where it is stored on the website publisher's computer. In other words, Google's cache copy could provide a user's browser with valid directions to an infringing image even though the updated webpage no longer includes that infringing image.

In addition to its search engine operations, Google generates revenue through a business program called "AdSense." Under this program, the owner of a website can register with Google to become an AdSense "partner." The website owner then places HTML instructions on its webpages that signal Google's server to place advertising on the webpages that is relevant to the webpages' content. Google's computer program selects the advertising automatically by means of an algorithm. AdSense participants agree to share the revenues that flow from such advertising with Google.

[1157] Google also generated revenues through an agreement with Amazon.com that allowed Amazon.com to in-line link to Google's search results. Amazon.com gave its users the impression that Amazon.com was providing search results, but Google communicated the search results directly to Amazon.com's users. Amazon.com routed users' search queries to Google and automatically transmitted Google's responses (i.e., HTML instructions for linking to Google's search results) back to its users.

Perfect 10 markets and sells copyrighted images of nude models. Among other enterprises, it operates a subscription website on the Internet. Subscribers pay a monthly fee to view Perfect 10 images in a "members' area" of the site. Subscribers must use a password to log into the members' area. Google does not include these password-protected images from the members' area in Google's index or database. Perfect 10 has also licensed Fonestarz Media Limited to sell and distribute Perfect 10's reduced-size copyrighted images for download and use on cell phones.

Some website publishers republish Perfect 10's images on the Internet without authorization. Once this occurs, Google's search engine may automatically index the webpages containing these images and provide thumbnail versions of images in response to user inquiries. When a user clicks on the thumbnail image returned by Google's search engine, the user's browser accesses the third-party webpage and in-line links to the full-sized infringing image stored on the website publisher's computer. This image appears, in its original context, on the lower portion of the window on the user's computer screen framed by information from Google's webpage.

Procedural History. In May 2001, Perfect 10 began notifying Google that its thumbnail images and in-line linking to the full-size images infringed Perfect 10's copyright. Perfect 10 continued to send these notices through 2005.

On November 19, 2004, Perfect 10 filed an action against Google that included copyright infringement claims. This was followed by a similar action against Amazon.com on June 29, 2005. On July 1, 2005 and August 24, 2005, Perfect 10 sought a preliminary injunction to prevent Amazon.com and Google, respectively, from "copying, reproducing, distributing, publicly displaying, adapting or otherwise infringing, or contributing to the infringement" of Perfect 10's photographs; linking to websites that provide full-size infringing versions of Perfect 10's photographs; and infringing Perfect 10's username/password combinations.

The district court consolidated the two actions and heard both preliminary injunction motions on November 7, 2005. The district court issued orders granting in part and denying in part the preliminary injunction against Google and denying the preliminary injunction against Amazon.com. Perfect 10 and Google cross-appealed the partial grant and partial denial of the preliminary injunction motion, and Perfect 10 appealed the denial of the preliminary injunction against Amazon.com. On June 15, 2006, the district court temporarily stayed the preliminary injunction.

II

Standard of Review

We review the district court's grant or denial of a preliminary injunction for an abuse of discretion. A & M Records, Inc. v. Napster, Inc., 239 F.3d 1004, 1013 (9th Cir.2001). The district court must support a preliminary injunction with findings of fact, which we review for clear error. Earth Island Inst. v. U.S. Forest Serv., 442 F.3d 1147, 1156 (9th Cir.2006). We review the district court's conclusions of law de novo. Napster, 239 F.3d at 1013.

[1158] Section 502(a) of the Copyright Act authorizes a court to grant injunctive relief "on such terms as it may deem reasonable to prevent or restrain infringement of a copyright." 17 U.S.C. § 502(a). "Preliminary injunctive relief is available to a party who demonstrates either: (1) a combination of probable success on the merits and the possibility of irreparable harm; or (2) that serious questions are raised and the balance of hardships tips in its favor. These two formulations represent two points on a sliding scale in which the required degree of irreparable harm increases as the probability of success decreases." Napster, 239 F.3d at 1013 (internal quotation and citation omitted).

Because Perfect 10 has the burden of showing a likelihood of success on the merits, the district court held that Perfect 10 also had the burden of demonstrating a likelihood of overcoming Google's fair use defense under 17 U.S.C. § 107. Perfect 10, 416 F.Supp.2d at 836-37. This ruling was erroneous. At trial, the defendant in an infringement action bears the burden of proving fair use. See Campbell v. Acuff-Rose Music, Inc., 510 U.S. 569, 590, 114 S.Ct. 1164, 127 L.Ed.2d 500 (1994). Because "the burdens at the preliminary injunction stage track the burdens at trial," once the moving party has carried its burden of showing a likelihood of success on the merits, the burden shifts to the non-moving party to show a likelihood that its affirmative defense will succeed. Gonzales v. O Centro Espirita Beneficente Uniao do Vegetal, 546 U.S. 418, 429, 126 S.Ct. 1211, 163 L.Ed.2d 1017 (2006); see also Abbott Labs. v. Andrx Pharms., Inc., 473 F.3d 1196, 1201 (Fed. Cir.2007) (to defeat a motion for preliminary injunctive relief in a patent infringement case, the non-moving party must establish a likelihood of success in proving its defenses of invalidity or unenforceability); PHG Techs., LLC v. St. John Cos., 469 F.3d 1361, 1365 (Fed.Cir.2006). Accordingly, once Perfect 10 has shown a likelihood of success on the merits, the burden shifts to Google to show a likelihood that its affirmative defenses will succeed.

In addition to its fair use defense, Google also raises an affirmative defense under title II of the Digital Millennium Copyright Act ("DMCA"), 17 U.S.C. § 512. Congress enacted title II of the DMCA "to provide greater certainty to service providers concerning their legal exposure for infringements that may occur in the course of their activities." Ellison v. Robertson, 357 F.3d 1072, 1076 (9th Cir. 2004) (internal quotation omitted). Sections 512(a) through (d) limit liability for (respectively): "(1) transitory digital network communications; (2) system caching; (3) information residing on systems or networks at the direction of users; and (4) information location tools." Id. at 1077. A service provider that qualifies for such protection is not liable for monetary relief and may be subject only to the narrow injunctive relief set forth in section 512(j). 17 U.S.C. § 512(a). If Perfect 10 demonstrates a likelihood of success on the merits, Google must show a likelihood of succeeding in its claim that it qualifies for protection under title II of the DMCA.^[4][1159]

III

Direct Infringement

Perfect 10 claims that Google's search engine program directly infringes two exclusive rights granted to copyright holders: its display rights and its distribution rights.^[5] "Plaintiffs must satisfy two requirements to present a prima facie case of direct infringement: (1) they must show ownership of the allegedly infringed material and (2) they must demonstrate that the alleged infringers violate at least one exclusive right granted to copyright holders under 17 U.S.C. § 106." Napster, 239 F.3d at 1013; see 17 U.S.C. § 501(a). Even if a plaintiff satisfies these two requirements and makes a prima facie case of direct infringement, the defendant may avoid liability if it can establish that its use of the images is a "fair use" as set forth in 17 U.S.C. § 107. See Kelly, 336 F.3d at 817.

Perfect 10's ownership of at least some of the images at issue is not disputed. See Perfect 10, 416 F.Supp.2d at 836.

The district court held that Perfect 10 was likely to prevail in its claim that Google violated Perfect 10's display right with respect to the infringing thumbnails. Id. at 844. However, the district court concluded that Perfect 10 was not likely to prevail on its claim that Google violated either Perfect 10's display or distribution right with respect to its full-size infringing images. Id. at 844-45. We review these rulings for an abuse of discretion. Napster, 239 F.3d at 1013.

A. Display Right

In considering whether Perfect 10 made a prima facie case of violation of its display right, the district court reasoned that a computer owner that stores an image as electronic information and serves that electronic information directly to the user ("i.e., physically sending ones and zeroes over the [I]nternet to the user's browser," Perfect 10, 416 F.Supp.2d at 839) is displaying the electronic information in violation of a copyright holder's exclusive display right. Id. at 843-45; see 17 U.S.C. § 106(5). Conversely, the owner of a computer that does not store and serve the electronic information to a user is not displaying that information, even if such owner in-line links to or frames the electronic information. Perfect 10, 416 F.Supp.2d at 843-45. The district court referred to this test as the "server test." Id. at 838-39.

Applying the server test, the district court concluded that Perfect 10 was likely to succeed in its claim that Google's thumbnails constituted direct infringement but was unlikely to succeed in its claim that Google's in-line linking to full-size infringing images constituted a direct infringement. [1160] Id. at 843-45. As explained below, because this analysis comports with the language of the Copyright Act, we agree with the district court's resolution of both these issues.

We have not previously addressed the question when a computer displays a copyrighted work for purposes of section 106(5). Section 106(5) states that a copyright owner has the exclusive right "to display the copyrighted work publicly." The Copyright Act explains that "display" means "to show a copy of it, either directly or by means of a film, slide, television image, or any other device or process...." 17 U.S.C. § 101. Section 101 defines "copies" as "material objects, other than phonorecords, in which a work is fixed by any method now known or later developed, and from which the work can be perceived, reproduced, or otherwise communicated, either directly or with the aid of a machine or device." Id. Finally, the Copyright Act provides that "[a] work is `fixed' in a tangible medium of expression when its embodiment in a copy or phonorecord, by or under the authority of the author, is sufficiently permanent or stable to permit it to be perceived, reproduced, or otherwise communicated for a period of more than transitory duration." Id.

We must now apply these definitions to the facts of this case. A photographic image is a work that is "`fixed' in a tangible medium of expression," for purposes of the Copyright Act, when embodied (i.e., stored) in a computer's server (or hard disk, or other storage device). The image stored in the computer is the "copy" of the work for purposes of copyright law. See MAI Sys. Corp. v. Peak Computer, Inc., 991 F.2d 511, 517-18 (9th Cir.1993) (a computer makes a "copy" of a software program when it transfers the program from a third party's computer (or other storage device) into its own memory, because the copy of the program recorded in the computer is "fixed" in a manner that is "sufficiently permanent or stable to permit it to be perceived, reproduced, or otherwise communicated for a period of more than transitory duration" (quoting 17 U.S.C. § 101)). The computer owner shows a copy "by means of a ... device or process" when the owner uses the computer to fill the computer screen with the photographic image stored on that computer, or by communicating the stored image electronically to another person's computer. 17 U.S.C. § 101. In sum, based on the plain language of the statute, a person displays a photographic image by using a computer to fill a computer screen with a copy of the photographic image fixed in the computer's memory. There is no dispute that Google's computers store thumbnail versions of Perfect 10's copyrighted images and communicate copies of those thumbnails to Google's users.^[6] Therefore, Perfect 10 has made a prima facie case that Google's communication of its stored thumbnail images directly infringes Perfect 10's display right.

Google does not, however, display a copy of full-size infringing photographic images for purposes of the Copyright Act when Google frames in-line linked images that appear on a user's computer screen. Because Google's computers do not store the photographic images, Google does not have a copy of the images for purposes of the Copyright Act. In other words, Google does not have any "material objects ... in [1161] which a work is fixed ... and from which the work can be perceived, reproduced, or otherwise communicated" and thus cannot communicate a copy. 17 U.S.C. § 101.

Instead of communicating a copy of the image, Google provides HTML instructions that direct a user's browser to a website publisher's computer that stores the full-size photographic image. Providing these HTML instructions is not equivalent to showing a copy. First, the HTML instructions are lines of text, not a photographic image. Second, HTML instructions do not themselves cause infringing images to appear on the user's computer screen. The HTML merely gives the address of the image to the user's browser. The browser then interacts with the computer that stores the infringing image. It is this interaction that causes an infringing image to appear on the user's computer screen. Google may facilitate the user's access to infringing images. However, such assistance raises only contributory liability issues, see Metro-Goldwyn-Mayer Studios, Inc. v. Grokster, Ltd., 545 U.S. 913, 929-30, 125 S.Ct. 2764, 162 L.Ed.2d 781 (2005), Napster, 239 F.3d at 1019, and does not constitute direct infringement of the copyright owner's display rights.

Perfect 10 argues that Google displays a copy of the full-size images by framing the full-size images, which gives the impression that Google is showing the image within a single Google webpage. While in-line linking and framing may cause some computer users to believe they are viewing a single Google webpage, the Copyright Act, unlike the Trademark Act, does not protect a copyright holder against acts that cause consumer confusion. Cf. 15 U.S.C. § 1114(1) (providing that a person who uses a trademark in a manner likely to cause confusion shall be liable in a civil action to the trademark registrant).^[7]

Nor does our ruling that a computer owner does not display a copy of an image when it communicates only the HTML address of the copy erroneously collapse the display right in section 106(5) into the reproduction right set forth in section 106(1). Nothing in the Copyright Act prevents the various rights protected in section 106 from overlapping. Indeed, under some circumstances, more than one right must be infringed in order for an infringement claim to arise. For example, a "Game Genie" device that allowed a player to alter features of a Nintendo computer game did not infringe Nintendo's right to prepare derivative works because the Game Genie did not incorporate any portion of the game itself. See Lewis Galoob Toys, Inc. v. Nintendo of Am., Inc., 964 F.2d 965, 967 (9th Cir.1992). We held that a copyright holder's right to create derivative works is not infringed unless the alleged derivative work "incorporate[s] a protected work in some concrete or permanent `form.'" Id. In other words, in some contexts, the claimant must be able to claim infringement of its reproduction right in order to claim infringement of its right to prepare derivative works.

[1162] Because Google's cache merely stores the text of webpages, our analysis of whether Google's search engine program potentially infringes Perfect 10's display and distribution rights is equally applicable to Google's cache. Perfect 10 is not likely to succeed in showing that a cached webpage that in-line links to full-size infringing images violates such rights. For purposes of this analysis, it is irrelevant whether cache copies direct a user's browser to third-party images that are no longer available on the third party's website, because it is the website publisher's computer, rather than Google's computer, that stores and displays the infringing image.

B. Distribution Right

The district court also concluded that Perfect 10 would not likely prevail on its claim that Google directly infringed Perfect 10's right to distribute its full-size images. Perfect 10, 416 F.Supp.2d at 844-45. The district court reasoned that distribution requires an "actual dissemination" of a copy. Id. at 844. Because Google did not communicate the full-size images to the user's computer, Google did not distribute these images. Id.

Again, the district court's conclusion on this point is consistent with the language of the Copyright Act. Section 106(3) provides that the copyright owner has the exclusive right "to distribute copies or phonorecords of the copyrighted work to the public by sale or other transfer of ownership, or by rental, lease, or lending." 17 U.S.C. § 106(3). As noted, "copies" means "material objects ... in which a work is fixed." 17 U.S.C. § 101. The Supreme Court has indicated that in the electronic context, copies may be distributed electronically. See N.Y. Times Co. v. Tasini, 533 U.S. 483, 498, 121 S.Ct. 2381, 150 L.Ed.2d 500 (2001) (a computer database program distributed copies of newspaper articles stored in its computerized database by selling copies of those articles through its database service). Google's search engine communicates HTML instructions that tell a user's browser where to find full-size images on a website publisher's computer, but Google does not itself distribute copies of the infringing photographs. It is the website publisher's computer that distributes copies of the images by transmitting the photographic image electronically to the user's computer. As in Tasini, the user can then obtain copies by downloading the photo or printing it.

Perfect 10 incorrectly relies on Hotaling v. Church of Jesus Christ of Latter-Day Saints and Napster for the proposition that merely making images "available" violates the copyright owner's distribution right. Hotaling v. Church of Jesus Christ of Latter-Day Saints, 118 F.3d 199 (4th Cir.1997); Napster, 239 F.3d 1004. Hotaling held that the owner of a collection of works who makes them available to the public may be deemed to have distributed copies of the works. Hotaling, 118 F.3d at 203. Similarly, the distribution rights of the plaintiff copyright owners were infringed by Napster users (private individuals with collections of music files stored on their home computers) when they used the Napster software to make their collections available to all other Napster users. Napster, 239 F.3d at 1011-14.

This "deemed distribution" rule does not apply to Google. Unlike the participants in the Napster system or the library in Hotaling, Google does not own a collection of Perfect 10's full-size images and does not communicate these images to the computers of people using Google's search engine. Though Google indexes these images, it does not have a collection of stored full-size images it makes available to the public. Google therefore cannot be deemed to distribute copies of these images under the reasoning of Napster or [1163] Hotaling. Accordingly, the district court correctly concluded that Perfect 10 does not have a likelihood of success in proving that Google violates Perfect 10's distribution rights with respect to full-size images.

C. Fair Use Defense

Because Perfect 10 has succeeded in showing it would prevail in its prima facie case that Google's thumbnail images infringe Perfect 10's display rights, the burden shifts to Google to show that it will likely succeed in establishing an affirmative defense. Google contends that its use of thumbnails is a fair use of the images and therefore does not constitute an infringement of Perfect 10's copyright. See 17 U.S.C. § 107.

The fair use defense permits the use of copyrighted works without the copyright owner's consent under certain situations. The defense encourages and allows the development of new ideas that build on earlier ones, thus providing a necessary counterbalance to the copyright law's goal of protecting creators' work product. "From the infancy of copyright protection, some opportunity for fair use of copyrighted materials has been thought necessary to fulfill copyright's very purpose...." Campbell, 510 U.S. at 575, 114 S.Ct. 1164. "The fair use doctrine thus `permits [and requires] courts to avoid rigid application of the copyright statute when, on occasion, it would stifle the very creativity which that law is designed to foster.'" Id. at 577, 114 S.Ct. 1164 (quoting Stewart v. Abend, 495 U.S. 207, 236, 110 S.Ct. 1750, 109 L.Ed.2d 184 (1990)) (alteration in original).

Congress codified the common law of fair use in 17 U.S.C. § 107, which provides:

Notwithstanding the provisions of sections 106 and 106A, the fair use of a copyrighted work, including such use by reproduction in copies or phonorecords or by any other means specified by that section, for purposes such as criticism, comment, news reporting, teaching (including multiple copies for classroom use), scholarship, or research, is not an infringement of copyright. In determining whether the use made of a work in any particular case is a fair use the factors to be considered shall include—

(1) the purpose and character of the use, including whether such use is of a commercial nature or is for nonprofit educational purposes;

(2) the nature of the copyrighted work;

(3) the amount and substantiality of the portion used in relation to the copyrighted work as a whole; and

(4) the effect of the use upon the potential market for or value of the copyrighted work.

The fact that a work is unpublished shall not itself bar a finding of fair use if such finding is made upon consideration of all the above factors.

17 U.S.C. § 107.

We must be flexible in applying a fair use analysis; it "is not to be simplified with bright-line rules, for the statute, like the doctrine it recognizes, calls for case-by-case analysis.... Nor may the four statutory factors be treated in isolation, one from another. All are to be explored, and the results weighed together, in light of the purposes of copyright." Campbell, 510 U.S. at 577-78, 114 S.Ct. 1164; see also Kelly, 336 F.3d at 817-18. The purpose of copyright law is "[t]o promote the Progress of Science and useful Arts," U.S. CONST. art. I, § 8, cl. 8, and to serve "`the welfare of the public.'" Sony Corp. of Am. v. Universal City Studios, Inc., 464 U.S. 417, 429 n. 10, 104 S.Ct. 774, 78 L.Ed.2d 574 (quoting H.R.Rep. No. 2222, 60th Cong., 2d Sess. 7 (1909)).

[1164] In applying the fair use analysis in this case, we are guided by Kelly v. Arriba Soft Corp., which considered substantially the same use of copyrighted photographic images as is at issue here. See 336 F.3d 811. In Kelly, a photographer brought a direct infringement claim against Arriba, the operator of an Internet search engine. The search engine provided thumbnail versions of the photographer's images in response to search queries. Id. at 815-16. We held that Arriba's use of thumbnail images was a fair use primarily based on the transformative nature of a search engine and its benefit to the public. Id. at 818-22. We also concluded that Arriba's use of the thumbnail images did not harm the photographer's market for his image. Id. at 821-22.

In this case, the district court determined that Google's use of thumbnails was not a fair use and distinguished Kelly. Perfect 10, 416 F.Supp.2d at 845-51. We consider these distinctions in the context of the four-factor fair use analysis.

Purpose and character of the use. The first factor, 17 U.S.C. § 107(1), requires a court to consider "the purpose and character of the use, including whether such use is of a commercial nature or is for nonprofit educational purposes." The central purpose of this inquiry is to determine whether and to what extent the new work is "transformative." Campbell, 510 U.S. at 579, 114 S.Ct. 1164. A work is "transformative" when the new work does not "merely supersede the objects of the original creation" but rather "adds something new, with a further purpose or different character, altering the first with new expression, meaning, or message." Id. (internal quotation and alteration omitted). Conversely, if the new work "supersede[s] the use of the original," the use is likely not a fair use. Harper & Row Publishers, Inc. v. Nation Enters., 471 U.S. 539, 550-51, 105 S.Ct. 2218, 85 L.Ed.2d 588 (1985) (internal quotation omitted) (publishing the "heart" of an unpublished work and thus supplanting the copyright holder's first publication right was not a fair use); see also Wall Data Inc. v. L.A. County Sheriff's Dep't, 447 F.3d 769, 778-82 (9th Cir.2006) (using a copy to save the cost of buying additional copies of a computer program was not a fair use).^[8]

As noted in Campbell, a "transformative work" is one that alters the original work [1165] "with new expression, meaning, or message." Campbell, 510 U.S. at 579, 114 S.Ct. 1164. "A use is considered transformative only where a defendant changes a plaintiff's copyrighted work or uses the plaintiff's copyrighted work in a different context such that the plaintiff's work is transformed into a new creation." Wall Data, 447 F.3d at 778.

Google's use of thumbnails is highly transformative. In Kelly, we concluded that Arriba's use of thumbnails was transformative because "Arriba's use of the images serve[d] a different function than Kelly's use—improving access to information on the [I]nternet versus artistic expression." Kelly, 336 F.3d at 819. Although an image may have been created originally to serve an entertainment, aesthetic, or informative function, a search engine transforms the image into a pointer directing a user to a source of information. Just as a "parody has an obvious claim to transformative value" because "it can provide social benefit, by shedding light on an earlier work, and, in the process, creating a new one," Campbell, 510 U.S. at 579, 114 S.Ct. 1164, a search engine provides social benefit by incorporating an original work into a new work, namely, an electronic reference tool. Indeed, a search engine may be more transformative than a parody because a search engine provides an entirely new use for the original work, while a parody typically has the same entertainment purpose as the original work. See, e.g., id. at 594-96, 114 S.Ct. 1164 (holding that 2 Live Crew's parody of "Oh, Pretty Woman" using the words "hairy woman" or "bald headed woman" was a transformative work, and thus constituted a fair use); Mattel, Inc. v. Walking Mountain Prods., 353 F.3d 792, 796-98, 800-06 (9th Cir.2003) (concluding that photos parodying Barbie by depicting "nude Barbie dolls juxtaposed with vintage kitchen appliances" was a fair use). In other words, a search engine puts images "in a different context" so that they are "transformed into a new creation." Wall Data, 447 F.3d at 778.

The fact that Google incorporates the entire Perfect 10 image into the search engine results does not diminish the transformative nature of Google's use. As the district court correctly noted, Perfect 10, 416 F.Supp.2d at 848-49, we determined in Kelly that even making an exact copy of a work may be transformative so long as the copy serves a different function than the original work, Kelly, 336 F.3d at 818-19. For example, the First Circuit has held that the republication of photos taken for a modeling portfolio in a newspaper was transformative because the photos served to inform, as well as entertain. See Nunez v. Caribbean Int'l News Corp., 235 F.3d 18, 22-23 (1st Cir.2000). In contrast, duplicating a church's religious book for use by a different church was not transformative. See Worldwide Church of God v. Phila. Church of God, Inc., 227 F.3d 1110, 1117 (9th Cir.2000). Nor was a broadcaster's simple retransmission of a radio broadcast over telephone lines transformative, where the original radio shows were given no "new expression, meaning, or message." Infinity Broad. Corp. v. Kirkwood, 150 F.3d 104, 108 (2d Cir.1998). Here, Google uses Perfect 10's images in a new context to serve a different purpose.

The district court nevertheless determined that Google's use of thumbnail images was less transformative than Arriba's use of thumbnails in Kelly because Google's use of thumbnails superseded Perfect 10's right to sell its reduced-size images for use on cell phones. See Perfect 10, 416 F.Supp.2d at 849. The district court stated that "mobile users can download and save the thumbnails displayed by Google Image Search onto their phones," and concluded "to the extent that users may choose to download free images to their [1166] phone rather than purchase [Perfect 10's] reduced-size images, Google's use supersedes [Perfect 10's]." Id.

Additionally, the district court determined that the commercial nature of Google's use weighed against its transformative nature. Id. Although Kelly held that the commercial use of the photographer's images by Arriba's search engine was less exploitative than typical commercial use, and thus weighed only slightly against a finding of fair use, Kelly, 336 F.3d at 818-20, the district court here distinguished Kelly on the ground that some website owners in the AdSense program had infringing Perfect 10 images on their websites, Perfect 10, 416 F.Supp.2d at 846-47. The district court held that because Google's thumbnails "lead users to sites that directly benefit Google's bottom line," the AdSense program increased the commercial nature of Google's use of Perfect 10's images. Id. at 847.

In conducting our case-specific analysis of fair use in light of the purposes of copyright, Campbell, 510 U.S. at 581, 114 S.Ct. 1164, we must weigh Google's superseding and commercial uses of thumbnail images against Google's significant transformative use, as well as the extent to which Google's search engine promotes the purposes of copyright and serves the interests of the public. Although the district court acknowledged the "truism that search engines such as Google Image Search provide great value to the public," Perfect 10, 416 F.Supp.2d at 848-49, the district court did not expressly consider whether this value outweighed the significance of Google's superseding use or the commercial nature of Google's use. Id. at 849. The Supreme Court, however, has directed us to be mindful of the extent to which a use promotes the purposes of copyright and serves the interests of the public. See Campbell, 510 U.S. at 579, 114 S.Ct. 1164; Harper & Row, 471 U.S. at 556-57, 105 S.Ct. 2218; Sony, 464 U.S. at 431-32, 104 S.Ct. 774.

We note that the superseding use in this case is not significant at present: the district court did not find that any downloads for mobile phone use had taken place. See Perfect 10, 416 F.Supp.2d at 849. Moreover, while Google's use of thumbnails to direct users to AdSense partners containing infringing content adds a commercial dimension that did not exist in Kelly, the district court did not determine that this commercial element was significant. See id. at 848-49. The district court stated that Google's AdSense programs as a whole contributed "$630 million, or 46% of total revenues" to Google's bottom line, but noted that this figure did not "break down the much smaller amount attributable to websites that contain infringing content." Id. at 847 & n. 12 (internal quotation omitted).

We conclude that the significantly transformative nature of Google's search engine, particularly in light of its public benefit, outweighs Google's superseding and commercial uses of the thumbnails in this case. In reaching this conclusion, we note the importance of analyzing fair use flexibly in light of new circumstances. Sony, 464 U.S. at 431-32, 104 S.Ct. 774; id. at 448 n. 31, 104 S.Ct. 774 ("`[Section 107] endorses the purpose and general scope of the judicial doctrine of fair use, but there is no disposition to freeze the doctrine in the statute, especially during a period of rapid technological change.'" (quoting H.R.Rep. No. 94-1476, p. 65-66 (1976), U.S.Code Cong. & Admin. News 1976, p. 5680)). We are also mindful of the Supreme Court's direction that "the more transformative the new work, the less will be the significance of other factors, like commercialism, that may weigh against a finding of fair use." Campbell, 510 U.S. at 579, 114 S.Ct. 1164.

[1167] Accordingly, we disagree with the district court's conclusion that because Google's use of the thumbnails could supersede Perfect 10's cell phone download use and because the use was more commercial than Arriba's, this fair use factor weighed "slightly" in favor of Perfect 10. Perfect 10, 416 F.Supp.2d at 849. Instead, we conclude that the transformative nature of Google's use is more significant than any incidental superseding use or the minor commercial aspects of Google's search engine and website. Therefore, this factor weighs heavily in favor of Google.

The nature of the copyrighted work. With respect to the second factor, "the nature of the copyrighted work," 17 U.S.C. § 107(2), our decision in Kelly is directly on point. There we held that the photographer's images were "creative in nature" and thus "closer to the core of intended copyright protection than are more fact-based works." Kelly, 336 F.3d at 820 (internal quotation omitted). However, because the photos appeared on the Internet before Arriba used thumbnail versions in its search engine results, this factor weighed only slightly in favor of the photographer. Id.

Here, the district court found that Perfect 10's images were creative but also previously published. Perfect 10, 416 F.Supp.2d at 850. The right of first publication is "the author's right to control the first public appearance of his expression." Harper & Row, 471 U.S. at 564, 105 S.Ct. 2218. Because this right encompasses "the choices of when, where, and in what form first to publish a work," id., an author exercises and exhausts this one-time right by publishing the work in any medium. See, e.g., Batjac Prods. Inc. v. Good-Times Home Video Corp., 160 F.3d 1223, 1235 (9th Cir.1998) (noting, in the context of the common law right of first publication, that such a right "does not entail multiple first publication rights in every available medium"). Once Perfect 10 has exploited this commercially valuable right of first publication by putting its images on the Internet for paid subscribers, Perfect 10 is no longer entitled to the enhanced protection available for an unpublished work. Accordingly the district court did not err in holding that this factor weighed only slightly in favor of Perfect 10.^[9] See Perfect 10, 416 F.Supp.2d at 849-50.

The amount and substantiality of the portion used. "The third factor asks whether the amount and substantiality of the portion used in relation to the copyrighted work as a whole ... are reasonable in relation to the purpose of the copying." Campbell, 510 U.S. at 586, 114 S.Ct. 1164 (internal quotation omitted); see also 17 U.S.C. § 107(3). In Kelly, we held Arriba's use of the entire photographic image was reasonable in light of the purpose of a search engine. Kelly, 336 F.3d at 821. Specifically, we noted, "[i]t was necessary for Arriba to copy the entire image to allow users to recognize the image and decide whether to pursue more information about the image or the originating [website]. If Arriba only copied part of the image, it would be more difficult to identify it, thereby reducing the usefulness of the visual search engine." Id. Accordingly, we concluded that this factor did not weigh in favor of either [1168] party. Id. Because the same analysis applies to Google's use of Perfect 10's image, the district court did not err in finding that this factor favored neither party.

Effect of use on the market. The fourth factor is "the effect of the use upon the potential market for or value of the copyrighted work." 17 U.S.C. § 107(4). In Kelly, we concluded that Arriba's use of the thumbnail images did not harm the market for the photographer's full-size images. See Kelly, 336 F.3d at 821-22. We reasoned that because thumbnails were not a substitute for the full-sized images, they did not harm the photographer's ability to sell or license his full-sized images. Id. The district court here followed Kelly's reasoning, holding that Google's use of thumbnails did not hurt Perfect 10's market for full-size images. See Perfect 10, 416 F.Supp.2d at 850-51. We agree.

Perfect 10 argues that the district court erred because the likelihood of market harm may be presumed if the intended use of an image is for commercial gain. However, this presumption does not arise when a work is transformative because "market substitution is at least less certain, and market harm may not be so readily inferred." Campbell, 510 U.S. at 591, 114 S.Ct. 1164. As previously discussed, Google's use of thumbnails for search engine purposes is highly transformative, and so market harm cannot be presumed.

Perfect 10 also has a market for reduced-size images, an issue not considered in Kelly. The district court held that "Google's use of thumbnails likely does harm the potential market for the downloading of [Perfect 10's] reduced-size images onto cell phones." Perfect 10, 416 F.Supp.2d at 851 (emphasis omitted). The district court reasoned that persons who can obtain Perfect 10 images free of charge from Google are less likely to pay for a download, and the availability of Google's thumbnail images would harm Perfect 10's market for cell phone downloads. Id. As we discussed above, the district court did not make a finding that Google users have downloaded thumbnail images for cell phone use. This potential harm to Perfect 10's market remains hypothetical. We conclude that this factor favors neither party.

Having undertaken a case-specific analysis of all four factors, we now weigh these factors together "in light of the purposes of copyright." Campbell, 510 U.S. at 578, 114 S.Ct. 1164; see also Kelly, 336 F.3d at 818 ("We must balance[the section 107] factors in light of the objectives of copyright law, rather than view them as definitive or determinative tests."). In this case, Google has put Perfect 10's thumbnail images (along with millions of other thumbnail images) to a use fundamentally different than the use intended by Perfect 10. In doing so, Google has provided a significant benefit to the public. Weighing this significant transformative use against the unproven use of Google's thumbnails for cell phone downloads, and considering the other fair use factors, all in light of the purpose of copyright, we conclude that Google's use of Perfect 10's thumbnails is a fair use. Because the district court here "found facts sufficient to evaluate each of the statutory factors ... [we] need not remand for further factfinding." Harper & Row, 471 U.S. at 560, 105 S.Ct. 2218 (internal quotation omitted). We conclude that Google is likely to succeed in proving its fair use defense and, accordingly, we vacate the preliminary injunction regarding Google's use of thumbnail images.

IV

Secondary Liability for Copyright Infringement

We now turn to the district court's ruling that Google is unlikely to be secondarily [1169] liable for its in-line linking to infringing full-size images under the doctrines of contributory and vicarious infringement.^[10] The district court ruled that Perfect 10 did not have a likelihood of proving success on the merits of either its contributory infringement or vicarious infringement claims with respect to the full-size images. See Perfect 10, 416 F.Supp.2d at 856, 858. In reviewing the district court's conclusions, we are guided by the Supreme Court's recent interpretation of secondary liability, namely: "[o]ne infringes contributorily by intentionally inducing or encouraging direct infringement, and infringes vicariously by profiting from direct infringement while declining to exercise a right to stop or limit it." Grokster, 545 U.S. at 930, 125 S.Ct. 2764 (internal citations omitted).

Direct Infringement by Third Parties. As a threshold matter, before we examine Perfect 10's claims that Google is secondarily liable, Perfect 10 must establish that there has been direct infringement by third parties. See Napster, 239 F.3d at 1013 n. 2 ("Secondary liability for copyright infringement does not exist in the absence of direct infringement by a third party.").

Perfect 10 alleges that third parties directly infringed its images in three ways. First, Perfect 10 claims that third-party websites directly infringed its copyright by reproducing, displaying, and distributing unauthorized copies of Perfect 10's images. Google does not dispute this claim on appeal.

Second, Perfect 10 claims that individual users of Google's search engine directly infringed Perfect 10's copyrights by storing full-size infringing images on their computers. We agree with the district court's conclusion that Perfect 10 failed to provide sufficient evidence to support this claim. See Perfect 10, 416 F.Supp.2d at 852. There is no evidence in the record directly establishing that users of Google's search engine have stored infringing images on their computers, and the district court did not err in declining to infer the existence of such evidence.

Finally, Perfect 10 contends that users who link to infringing websites automatically make "cache" copies of full-size images and thereby directly infringe Perfect 10's reproduction right. The district court rejected this argument, holding that any such reproduction was likely a "fair use." Id. at 852 n. 17. The district court reasoned that "[l]ocal caching by the browsers of individual users is noncommercial, transformative, and no more than necessary to achieve the objectives of decreasing network latency and minimizing unnecessary bandwidth usage (essential to the [I]nternet). It has a minimal impact on the potential market for the original work...." Id. We agree; even assuming such automatic copying could constitute direct infringement, it is a fair use in this context. The copying function performed automatically by a user's computer to assist in accessing the Internet is a transformative use. Moreover, as noted by the district court, a cache copies no more than is necessary to assist the user in Internet use. It is designed to enhance an individual's computer use, not to supersede the copyright holders' exploitation of their works. Such automatic background copying has no more than a minimal effect on Perfect 10's rights, but a considerable public benefit. Because the four fair use factors weigh in favor of concluding that [1170] cache copying constitutes a fair use, Google has established a likelihood of success on this issue. Accordingly, Perfect 10 has not carried its burden of showing that users' cache copies of Perfect 10's full-size images constitute direct infringement.

Therefore, we must assess Perfect 10's arguments that Google is secondarily liable in light of the direct infringement that is undisputed by the parties: third-party websites' reproducing, displaying, and distributing unauthorized copies of Perfect 10's images on the Internet. Id. at 852.

A. Contributory Infringement

In order for Perfect 10 to show it will likely succeed in its contributory liability claim against Google, it must establish that Google's activities meet the definition of contributory liability recently enunciated in Grokster. Within the general rule that "[o]ne infringes contributorily by intentionally inducing or encouraging direct infringement," Grokster, 545 U.S. at 930, 125 S.Ct. 2764, the Court has defined two categories of contributory liability: "Liability under our jurisprudence may be predicated on actively encouraging (or inducing) infringement through specific acts (as the Court's opinion develops) or on distributing a product distributees use to infringe copyrights, if the product is not capable of `substantial' or `commercially significant' noninfringing uses." Id. at 942, 125 S.Ct. 2764 (Ginsburg, J., concurring) (quoting Sony, 464 U.S. at 442, 104 S.Ct. 774); see also id. at 936-37, 125 S.Ct. 2764.

Looking at the second category of liability identified by the Supreme Court (distributing products), Google relies on Sony, 464 U.S. at 442, 104 S.Ct. 774, to argue that it cannot be held liable for contributory infringement because liability does not arise from the mere sale of a product (even with knowledge that consumers would use the product to infringe) if the product is capable of substantial non-infringing use. Google argues that its search engine service is such a product. Assuming the principle enunciated in Sony is applicable to the operation of Google's search engine, then Google cannot be held liable for contributory infringement solely because the design of its search engine facilitates such infringement. Grokster, 545 U.S. at 931-32, 125 S.Ct. 2764 (discussing Sony, 464 U.S. 417, 104 S.Ct. 774, 78 L.Ed.2d 574). Nor can Google be held liable solely because it did not develop technology that would enable its search engine to automatically avoid infringing images. See id. at 939 n. 12, 125 S.Ct. 2764. However, Perfect 10 has not based its claim of infringement on the design of Google's search engine and the Sony rule does not immunize Google from other sources of contributory liability. See id. at 933-34, 125 S.Ct. 2764.

We must next consider whether Google could be held liable under the first category of contributory liability identified by the Supreme Court, that is, the liability that may be imposed for intentionally encouraging infringement through specific acts.^[11] Grokster tells us that contribution to infringement must be intentional for liability to arise. Grokster, 545 U.S. at 930, 125 S.Ct. 2764. However, Grokster also directs us to analyze contributory liability in light of "rules of fault-based liability derived from the common law," id. at 934-35, 125 S.Ct. 2764, and [1171] common law principles establish that intent may be imputed. "Tort law ordinarily imputes to an actor the intention to cause the natural and probable consequences of his conduct." DeVoto v. Pac. Fid. Life Ins. Co., 618 F.2d 1340, 1347 (9th Cir. 1980); RESTATEMENT (SECOND) OF TORTS § 8A cmt. b (1965) ("If the actor knows that the consequences are certain, or substantially certain, to result from his act, and still goes ahead, he is treated by the law as if he had in fact desired to produce the result."). When the Supreme Court imported patent law's "staple article of commerce doctrine" into the copyright context, it also adopted these principles of imputed intent. Grokster, 545 U.S. at 932, 125 S.Ct. 2764 ("The [staple article of commerce] doctrine was devised to identify instances in which it may be presumed from distribution of an article in commerce that the distributor intended the article to be used to infringe another's patent, and so may justly be held liable for that infringement."). Therefore, under Grokster, an actor may be contributorily liable for intentionally encouraging direct infringement if the actor knowingly takes steps that are substantially certain to result in such direct infringement.

Our tests for contributory liability are consistent with the rule set forth in Grokster. We have adopted the general rule set forth in Gershwin Publishing Corp. v. Columbia Artists Management, Inc., namely: "one who, with knowledge of the infringing activity, induces, causes or materially contributes to the infringing conduct of another, may be held liable as a `contributory' infringer," 443 F.2d 1159, 1162 (2d Cir.1971). See Ellison, 357 F.3d at 1076; Napster, 239 F.3d at 1019; Fonovisa, Inc. v. Cherry Auction, Inc., 76 F.3d 259, 264 (9th Cir.1996).

We have further refined this test in the context of cyberspace^[12] to determine when contributory liability can be imposed on a provider of Internet access or services. See Napster, 239 F.3d at 1019-20. In Napster, we considered claims that the operator of an electronic file sharing system was contributorily liable for assisting individual users to swap copyrighted music files stored on their home computers with other users of the system. Napster, 239 F.3d at 1011-13, 1019-22. We stated that "if a computer system operator learns of specific infringing material available on his system and fails to purge such material from the system, the operator knows of and contributes to direct infringement." Id. at 1021. Because Napster knew of the availability of infringing music files, assisted users in accessing such files, and failed to block access to such files, we concluded that Napster materially contributed to infringement. Id. at 1022.

The Napster test for contributory liability was modeled on the influential district court decision in Religious Technology Center v. Netcom On-Line Communication Services, Inc. (Netcom), 907 F.Supp. 1361, 1365-66 (N.D.Cal.1995). See Napster, 239 F.3d at 1021. In Netcom, a disgruntled former Scientology minister posted allegedly infringing copies of Scientological works on an electronic bulletin board service. Netcom, 907 F.Supp. at 1365-66. The messages were stored on the bulletin board operator's computer, then automatically copied onto Netcom's computer, and from there copied onto other computers comprising "a worldwide community" of electronic bulletin board systems. Id. at 1366-67 & n. 4 (internal quotation omitted). Netcom held that if plaintiffs [1172] could prove that Netcom knew or should have known that the minister infringed plaintiffs' copyrights, "Netcom [would] be liable for contributory infringement since its failure to simply cancel [the former minister's] infringing message and thereby stop an infringing copy from being distributed worldwide constitute[d] substantial participation in [the former minister's] public distribution of the message." Id. at 1374.

Although neither Napster nor Netcom expressly required a finding of intent, those cases are consistent with Grokster because both decisions ruled that a service provider's knowing failure to prevent infringing actions could be the basis for imposing contributory liability. Under such circumstances, intent may be imputed. In addition, Napster and Netcom are consistent with the longstanding requirement that an actor's contribution to infringement must be material to warrant the imposition of contributory liability. Gershwin, 443 F.2d at 1162. Both Napster and Netcom acknowledge that services or products that facilitate access to websites throughout the world can significantly magnify the effects of otherwise immaterial infringing activities. See Napster, 239 F.3d at 1022; Netcom, 907 F.Supp. at 1375. The Supreme Court has acknowledged that "[t]he argument for imposing indirect liability" is particularly "powerful" when individuals using the defendant's software could make a huge number of infringing downloads every day. Grokster, 545 U.S. at 929, 125 S.Ct. 2764. Moreover, copyright holders cannot protect their rights in a meaningful way unless they can hold providers of such services or products accountable for their actions pursuant to a test such as that enunciated in Napster. See id. at 929-30, 125 S.Ct. 2764 ("When a widely shared service or product is used to commit infringement, it may be impossible to enforce rights in the protected work effectively against all direct infringers, the only practical alternative being to go against the distributor of the copying device for secondary liability on a theory of contributory or vicarious infringement."). Accordingly, we hold that a computer system operator can be held contributorily liable if it "has actual knowledge that specific infringing material is available using its system," Napster, 239 F.3d at 1022, and can "take simple measures to prevent further damage" to copyrighted works, Netcom, 907 F.Supp. at 1375, yet continues to provide access to infringing works.

Here, the district court held that even assuming Google had actual knowledge of infringing material available on its system, Google did not materially contribute to infringing conduct because it did not undertake any substantial promotional or advertising efforts to encourage visits to infringing websites, nor provide a significant revenue stream to the infringing websites. Perfect 10, 416 F.Supp.2d at 854-56. This analysis is erroneous. There is no dispute that Google substantially assists websites to distribute their infringing copies to a worldwide market and assists a worldwide audience of users to access infringing materials. We cannot discount the effect of such a service on copyright owners, even though Google's assistance is available to all websites, not just infringing ones. Applying our test, Google could be held contributorily liable if it had knowledge that infringing Perfect 10 images were available using its search engine, could take simple measures to prevent further damage to Perfect 10's copyrighted works, and failed to take such steps.

The district court did not resolve the factual disputes over the adequacy of Perfect 10's notices to Google and Google's responses to these notices. Moreover, there are factual disputes over whether there are reasonable and feasible means for Google to refrain from providing access [1173] to infringing images. Therefore, we must remand this claim to the district court for further consideration whether Perfect 10 would likely succeed in establishing that Google was contributorily liable for in-line linking to full-size infringing images under the test enunciated today.^[13]

B. Vicarious Infringement

Perfect 10 also challenges the district court's conclusion that it is not likely to prevail on a theory of vicarious liability against Google. Perfect 10, 416 F.Supp.2d at 856-58. Grokster states that one "infringes vicariously by profiting from direct infringement while declining to exercise a right to stop or limit it." Grokster, 545 U.S. at 930, 125 S.Ct. 2764. As this formulation indicates, to succeed in imposing vicarious liability, a plaintiff must establish that the defendant exercises the requisite control over the direct infringer and that the defendant derives a direct financial benefit from the direct infringement. See id. Grokster further explains the "control" element of the vicarious liability test as the defendant's "right and ability to supervise the direct infringer." Id. at 930 n. 9, 125 S.Ct. 2764. Thus, under Grokster, a defendant exercises control over a direct infringer when he has both a legal right to stop or limit the directly infringing conduct, as well as the practical ability to do so.

We evaluate Perfect 10's arguments that Google is vicariously liable in light of the direct infringement that is undisputed by the parties, namely, the third-party websites' reproduction, display, and distribution of unauthorized copies of Perfect 10's images on the Internet. Perfect 10, 416 F.Supp.2d at 852; see supra Section IV.A. In order to prevail at this preliminary injunction stage, Perfect 10 must demonstrate a likelihood of success in establishing that Google has the right and ability to stop or limit the infringing activities of third party websites. In addition, Perfect 10 must establish a likelihood of proving that Google derives a direct financial benefit from such activities. Perfect 10 has not met this burden.

With respect to the "control" element set forth in Grokster, Perfect 10 has not demonstrated a likelihood of showing that Google has the legal right to stop or limit the direct infringement of third-party websites. See Grokster, 545 U.S. at 930, 125 S.Ct. 2764. Unlike Fonovisa, where by virtue of a "broad contract" with its vendors the defendant swap meet operators had the right to stop the vendors from selling counterfeit recordings on its premises, Fonovisa, 76 F.3d at 263, Perfect 10 has not shown that Google has contracts with third-party websites that empower Google to stop or limit them from reproducing, displaying, and distributing infringing copies of Perfect 10's images on the Internet. Perfect 10 does point to Google's AdSense agreement, which states that Google reserves "the right to monitor and terminate partnerships with entities that violate others' copyright[s]." Perfect 10, 416 F.Supp.2d at 858. However, Google's right to terminate an AdSense partnership does not give Google the right to [1174] stop direct infringement by third-party websites. An infringing third-party website can continue to reproduce, display, and distribute its infringing copies of Perfect 10 images after its participation in the AdSense program has ended.

Nor is Google similarly situated to Napster. Napster users infringed the plaintiffs' reproduction and distribution rights through their use of Napster's proprietary music-file sharing system. Napster, 239 F.3d at 1011-14. There, the infringing conduct was the use of Napster's "service to download and upload copyrighted music." Id. at 1014 (internal quotation omitted). Because Napster had a closed system requiring user registration, and could terminate its users' accounts and block their access to the Napster system, Napster had the right and ability to prevent its users from engaging in the infringing activity of uploading file names and downloading Napster users' music files through the Napster system.^[14] Id. at 1023-24. By contrast, Google cannot stop any of the third-party websites from reproducing, displaying, and distributing unauthorized copies of Perfect 10's images because that infringing conduct takes place on the third-party websites. Google cannot terminate those third-party websites or block their ability to "host and serve infringing full-size images" on the Internet. Perfect 10, 416 F.Supp.2d at 831.

Moreover, the district court found that Google lacks the practical ability to police the third-party websites' infringing conduct. Id. at 857-58. Specifically, the court found that Google's supervisory power is limited because "Google's software lacks the ability to analyze every image on the [I]nternet, compare each image to all the other copyrighted images that exist in the world ... and determine whether a certain image on the web infringes someone's copyright." Id. at 858. The district court also concluded that Perfect 10's suggestions regarding measures Google could implement to prevent its web crawler from indexing infringing websites and to block access to infringing images were not workable. Id. at 858 n. 25. Rather, the suggestions suffered from both "imprecision and overbreadth." Id. We hold that these findings are not clearly erroneous. Without image-recognition technology, Google lacks the practical ability to police the infringing activities of third-party websites. This distinguishes Google from the defendants held liable in Napster and Fonovisa. See Napster, 239 F.3d at 1023-24 (Napster had the ability to identify and police infringing conduct by searching its index for song titles); Fonovisa, 76 F.3d at 262 (swap meet operator had the ability to identify and police infringing activity by patrolling its premises).

Perfect 10 argues that Google could manage its own operations to avoid [1175] indexing websites with infringing content and linking to third-party infringing sites. This is a claim of contributory liability, not vicarious liability. Although "the lines between direct infringement, contributory infringement, and vicarious liability are not clearly drawn," Sony, 464 U.S. at 435 n. 17, 104 S.Ct. 774 (internal quotation omitted), in general, contributory liability is based on the defendant's failure to stop its own actions which facilitate third-party infringement, while vicarious liability is based on the defendant's failure to cause a third party to stop its directly infringing activities. See, e.g., Ellison, 357 F.3d at 1077-78; Fonovisa, 76 F.3d at 261-64. Google's failure to change its operations to avoid assisting websites to distribute their infringing content may constitute contributory liability, see supra Section IV.A. However, this failure is not the same as declining to exercise a right and ability to make third-party websites stop their direct infringement. We reject Perfect 10's efforts to blur this distinction.

Because we conclude that Perfect 10 has not shown a likelihood of establishing Google's right and ability to stop or limit the directly infringing conduct of third-party websites, we agree with the district court's conclusion that Perfect 10 "has not established a likelihood of proving the [control] prong necessary for vicarious liability." Perfect 10, 416 F.Supp.2d at 858.^[15]

C. Digital Millennium Copyright Act

Google claims that it qualifies for the limitations on liability set forth in title II of the DMCA, 17 U.S.C. § 512. In particular, section 512(d) limits the liability of a service provider "for infringement of copyright by reason of the provider referring or linking users to an online location containing infringing material or infringing activity, by using information location tools, including a directory, index, reference, pointer, or hypertext link" if the service provider meets certain criteria. We have held that the limitations on liability contained in 17 U.S.C. § 512 protect secondary infringers as well as direct infringers. Napster, 239 F.3d at 1025.

The parties dispute whether Google meets the specified criteria. Perfect 10 claims that it sent qualifying notices to Google and Google did not act expeditiously to remove the infringing material. Google claims that Perfect 10's notices did not comply with the notice provisions of section 512 and were not adequate to inform Google of the location of the infringing images on the Internet or identify the underlying copyrighted work. Google also claims that it responded to all notices it received by investigating the webpages identified by Perfect 10 and suppressing links to any webpages that Google confirmed were infringing.

Because the district court determined that Perfect 10 was unlikely to succeed on its contributory and vicarious liability claims, it did not reach Google's arguments under section 512. In revisiting the question of Perfect 10's likelihood of success on its contributory infringement claims, the district court should also consider whether Google would likely succeed in showing that it was entitled to the limitations on injunctive relief provided by title II of the DMCA.

V

Amazon.com

Perfect 10 claims that Amazon.com displays and distributes Perfect 10's copyrighted images and is also secondarily [1176] liable for the infringements of third-party websites and Amazon.com users. The district court concluded that Perfect 10 was unlikely to succeed in proving that Amazon.com was a direct infringer, because it merely in-line linked to the thumbnails on Google's servers and to the full-size images on third-party websites.^[16] Perfect 10 v. Amazon, No. 05-4753, consolidated with 04-9484 (C.D.Cal. February 21, 2006) (order denying preliminary injunction). In addition, the district court concluded that Perfect 10's secondary infringement claims against Amazon.com were likely to fail because Amazon.com had no program analogous to AdSense, and thus did not provide any revenues to infringing sites. Id. Finally, the district court determined that Amazon.com's right and ability to control the infringing conduct of third-party websites was substantially less than Google's. Id. Therefore, the district court denied Perfect 10's motion for a preliminary injunction against Amazon.com. Id.

We agree that Perfect 10 has not shown a likelihood that it would prevail on the merits of its claim that Amazon.com directly infringed its images. Amazon.com communicates to its users only the HTML instructions that direct the users' browsers to Google's computers (for thumbnail images) or to a third party's computer (for full-size infringing images). Therefore, Amazon.com does not display or distribute a copy of the thumbnails or full-size images to its users.

We also agree with the district court's conclusion that Amazon.com does not have "the right and ability to supervise the infringing activity" of Google or third parties. The district court did not clearly err in concluding that Amazon.com lacked a direct financial interest in such activities. Therefore, Perfect 10's claim that Amazon.com is vicariously liable for third-party infringement is unlikely to succeed.

However, the district court did not consider whether Amazon.com had "actual knowledge that specific infringing material is available using its system," Napster, 239 F.3d at 1022 (emphasis in original), and could have "take[n] simple measures to prevent further damage" to copyrighted works, Netcom, 907 F.Supp. at 1375, yet continued to provide access to infringing works. Perfect 10 has presented evidence that it notified Amazon.com that it was facilitating its users' access to infringing material. It is disputed whether the notices gave Amazon.com actual knowledge of specific infringing activities available using its system, and whether Amazon.com could have taken reasonable and feasible steps to refrain from providing access to such images, but failed to do so. Nor did the district court consider whether Amazon.com is entitled to limit its liability under title II of the DMCA. On remand, the district court should consider Amazon.com's potential contributory liability, as well as possible limitations on the scope of injunctive relief, in light of our rulings today.

VI

We conclude that Google's fair use defense is likely to succeed at trial, and therefore we reverse the district court's determination that Google's thumbnail versions of Perfect 10's images likely constituted a direct infringement. The district court also erred in its secondary liability [1177] analysis because it failed to consider whether Google and Amazon.com knew of infringing activities yet failed to take reasonable and feasible steps to refrain from providing access to infringing images. Therefore we must also reverse the district court's holding that Perfect 10 was unlikely to succeed on the merits of its secondary liability claims. Due to this error, the district court did not consider whether Google and Amazon.com are entitled to the limitations on liability set forth in title II of the DMCA. The question whether Google and Amazon.com are secondarily liable, and whether they can limit that liability pursuant to title II of the DMCA, raise fact-intensive inquiries, potentially requiring further fact finding, and thus can best be resolved by the district court on remand. We therefore remand this matter to the district court for further proceedings consistent with this decision.

Because the district court will need to reconsider the appropriate scope of injunctive relief after addressing these secondary liability issues, we do not address the parties' arguments regarding the scope of the injunction issued by the district court. For the same reason, we do not address the parties' dispute over whether the district court abused its discretion in determining that Perfect 10 satisfied the irreparable harm element of a preliminary injunction.

Therefore, we reverse the district court's ruling and vacate the preliminary injunction regarding Google's use of thumbnail versions of Perfect 10's images.^[17] We reverse the district court's rejection of the claims that Google and Amazon.com are secondarily liable for infringement of Perfect 10's full-size images. We otherwise affirm the rulings of the district court. We remand this matter for further proceedings consistent with this opinion. Each party shall bear its own costs on appeal. See FED. R. APP. P. 39(a)(4).

AFFIRMED IN PART; REVERSED IN PART; REMANDED.

[1] Google argues that we lack jurisdiction over the preliminary injunction to the extent it enforces unregistered copyrights. Registration is generally a jurisdictional prerequisite to a suit for copyright infringement. See 17 U.S.C. § 411. But section 411 does not limit the remedies a court can grant. Rather, the Copyright Act gives courts broad authority to issue injunctive relief. See 17 U.S.C. § 502(a). Once a court has jurisdiction over an action for copyright infringement under section 411, the court may grant injunctive relief to restrain infringement of any copyright, whether registered or unregistered. See, e.g., Olan Mills, Inc. v. Linn Photo Co., 23 F.3d 1345, 1349 (8th Cir.1994); Pac. & S. Co., Inc. v. Duncan, 744 F.2d 1490, 1499 n. 17 (11th Cir.1984). Because at least some of the Perfect 10 images at issue were registered, the district court did not err in determining that it could issue an order that covers unregistered works. Therefore, we have jurisdiction over the district court's decision and order.

[2] The website publisher may not actually store the photographic images used on its webpages in its own computer, but may provide HTML instructions directing the user's browser to some further computer that stores the image. Because this distinction does not affect our analysis, for convenience, we will assume that the website publisher stores all images used on its webpages in the website publisher's own computer.

[3] Generally, a "cache" is "a computer memory with very short access time used for storage of frequently or recently used instructions or data." United States v. Ziegler, 474 F.3d 1184, 1186 n. 3 (9th Cir.2007) (quoting MERRIAM-WEBSTER'S COLLEGIATE DICTIONARY 171 (11th ed.2003)). There are two types of caches at issue in this case. A user's personal computer has an internal cache that saves copies of webpages and images that the user has recently viewed so that the user can more rapidly revisit these webpages and images. Google's computers also have a cache which serves a variety of purposes. Among other things, Google's cache saves copies of a large number of webpages so that Google's search engine can efficiently organize and index these webpages.

[4] Perfect 10 argues that we are bound by the language and structure of title II of the DMCA in determining Google's liability for copyright infringement. We have noted that the DMCA does not change copyright law; rather, "Congress provided that [the DMCA's] limitations of liability apply if the provider is found to be liable under existing principles of law." Ellison, 357 F.3d at 1077 (emphasis and internal quotation omitted). As a result, "[c]laims against service providers for direct, contributory, or vicarious copyright infringement, therefore, are generally evaluated just as they would be in the non-online world." Id.; see also 17 U.S.C. § 512(l) ("The failure of a service provider's conduct to qualify for limitation of liability under this section shall not bear adversely upon the consideration of a defense by the service provider that the service provider's conduct is not infringing under this title or any other defense."). Therefore, we must consider Google's potential liability under the Copyright Act without reference to title II of the DMCA.

[5] 17 U.S.C. § 106 states, in pertinent part:

Subject to sections 107 through 122, the owner of copyright under this title has the exclusive rights to do and to authorize any of the following:

(1) to reproduce the copyrighted work in copies or phonorecords;

....

(3) to distribute copies or phonorecords of the copyrighted work to the public by sale or other transfer of ownership, or by rental, lease, or lending;

....

(5) in the case of literary, musical, dramatic, and choreographic works, pantomimes, and pictorial, graphic, or sculptural works, including the individual images of a motion picture or other audiovisual work, to display the copyrighted work publicly....

[6] Because Google initiates and controls the storage and communication of these thumbnail images, we do not address whether an entity that merely passively owns and manages an Internet bulletin board or similar system violates a copyright owner's display and distribution rights when the users of the bulletin board or similar system post infringing works. Cf. CoStar Group, Inc. v. LoopNet, Inc., 373 F.3d 544 (4th Cir.2004).

[7] Perfect 10 also argues that Google violates Perfect 10's right to display full-size images because Google's in-line linking meets the Copyright Act's definition of "to perform or display a work `publicly.'" 17 U.S.C. § 101. This phrase means "to transmit or otherwise communicate a performance or display of the work to ... the public, by means of any device or process, whether the members of the public capable of receiving the performance or display receive it in the same place or in separate places and at the same time or at different times." Id. Perfect 10 is mistaken. Google's activities do not meet this definition because Google transmits or communicates only an address which directs a user's browser to the location where a copy of the full-size image is displayed. Google does not communicate a display of the work itself.

[8] We reject at the outset Perfect 10's argument that providing access to infringing websites cannot be deemed transformative and is inherently not fair use. Perfect 10 relies on Video Pipeline, Inc. v. Buena Vista Home Entm't, Inc., 342 F.3d 191 (3d Cir.2003), and Atari Games Corp. v. Nintendo of Am. Inc., 975 F.2d 832, 843 (Fed.Cir.1992). But these cases, in essence, simply apply the general rule that a party claiming fair use must act in a manner generally compatible with principles of good faith and fair dealing. See Harper & Row, 471 U.S. at 562-63, 105 S.Ct. 2218. For this reason, a company whose business is based on providing scenes from copyrighted movies without authorization could not claim that it provided the same public benefit as the search engine in Kelly. See Video Pipeline, 342 F.3d at 198-200. Similarly, a company whose overriding desire to replicate a competitor's computer game led it to obtain a copy of the competitor's source code from the Copyright Office under false pretenses could not claim fair use with respect to its purloined copy. Atari Games, 975 F.2d at 843.

Unlike the alleged infringers in Video Pipeline and Atari Games, who intentionally misappropriated the copyright owners' works for the purpose of commercial exploitation, Google is operating a comprehensive search engine that only incidentally indexes infringing websites. This incidental impact does not amount to an abuse of the good faith and fair dealing underpinnings of the fair use doctrine. Accordingly, we conclude that Google's inclusion of thumbnail images derived from infringing websites in its Internet-wide search engine activities does not preclude Google from raising a fair use defense.

[9] Google contends that Perfect 10's photographic images are less creative and less deserving of protection than the images of the American West in Kelly because Perfect 10 boasts of its un-retouched photos showing the natural beauty of its models. Having reviewed the record, we conclude that the district court's finding that Perfect 10's photographs "consistently reflect professional, skillful, and sometimes tasteful artistry" is not clearly erroneous. Perfect 10, 416 F.Supp.2d at 849 n. 15. We agree with the district court that there is no basis for concluding that photos of the American West are more deserving of protection than photos of nude models. See id.

[10] Because the district court concluded that Perfect 10 was likely to prevail on its direct infringement claim with respect to Google's use of thumbnails, but not with respect to its in-line linking to full-size images, the district court considered Google's potential secondary liability only on the second issue.

[11] Google's activities do not meet the "inducement" test explained in Grokster because Google has not promoted the use of its search engine specifically to infringe copyrights. See Grokster, 545 U.S. at 935-37, 125 S.Ct. 2764. However, the Supreme Court in Grokster did not suggest that a court must find inducement in order to impose contributory liability under common law principles.

[12] "Cyberspace is a popular term for the world of electronic communications over computer networks." Religious Tech. Ctr. v. Netcom On-Line Commc'n Servs., Inc., 907 F.Supp. 1361, 1365 n. 1 (N.D.Cal.1995).

[13] Perfect 10 claims that Google materially contributed to infringement by linking to websites containing unauthorized passwords, which enabled Google users to access Perfect 10's website and make infringing copies of images. However, Perfect 10 points to no evidence that users logging onto the Perfect 10 site with unauthorized passwords infringed Perfect 10's exclusive rights under section 106. In the absence of evidence that Google's actions led to any direct infringement, this argument does not assist Perfect 10 in establishing that it would prevail on the merits of its contributory liability claim. See Napster, 239 F.3d at 1013 n. 2 ("Secondary liability for copyright infringement does not exist in the absence of direct infringement by a third party.").

[14] Napster's system included "Napster's MusicShare software, available free of charge from Napster's Internet site, and Napster's network servers and server-side software." Napster, 239 F.3d at 1011. By downloading Napster's MusicShare software to the user's personal computer, and registering with the Napster system, a user could both upload and download music files. Id. at 1011-13. If the Napster user uploaded a list of music files stored on the user's personal computer to the Napster system, such music files would be automatically available to other Napster users whenever the user was logged on to the Napster system. Id. at 1012. In addition, the Napster user could download music files directly from other users' personal computers. Id. We explained the infringing conduct as "Napster users who upload file names to the [Napster] search index for others to copy violate plaintiffs' distribution rights. Napster users who download files [through the Napster system] containing copyrighted music violate plaintiffs' reproduction rights." Id. at 1014.

[15] Having so concluded, we need not reach Perfect 10's argument that Google received a direct financial benefit.

[16] Amazon.com states that it ended its relationship with Google on April 30, 2006. Perfect 10's action for preliminary injunction against Amazon.com is not moot, however, because Amazon.com has not established "that the allegedly wrongful behavior cannot reasonably be expected to recur." F.T.C. v. Affordable Media, LLC, 179 F.3d 1228, 1238 (9th Cir.1999) (internal quotation omitted).

[17] Because we vacate the injunction, Google's motion for stay of the injunction is moot.

BREYER, J., delivered the opinion of the Court, in which ROBERTS, C. J., and KENNEDY, GINSBURG, SOTOMAYOR, and KAGAN, JJ., joined. SCALIA, J., filed a dissenting opinion, in which THOMAS and ALITO, JJ., joined.

JUSTICE BREYER, delivered the opinion of the Court.

The Copyright Act of 1976 gives a copyright owner the "exclusive righ[t]" to "perform the copyrighted work publicly." 17 U. S. C. §106(4). The Act's Transmit Clause defines that exclusive right as including the right to

"transmit or otherwise communicate a performance. . . of the [copyrighted] work . . . to the public, by means of any device or process, whether the members of the public capable of receiving the performance . . . receive it in the same place or in separate places and at the same time or at different times." §101.

We must decide whether respondent Aereo, Inc., infringes this exclusive right by selling its subscribers a technologically complex service that allows them to watch television programs over the Internet at about the same time as the programs are broadcast over the air. We conclude that it does.

I

A

For a monthly fee, Aereo offers subscribers broadcast television programming over the Internet, virtually as the programming is being broadcast. Much of this program-ming is made up of copyrighted works. Aereo neither owns the copyright in those works nor holds a license from the copyright owners to perform those works publicly.

Aereo's system is made up of servers, transcoders, and thousands of dime-sized antennas housed in a central warehouse. It works roughly as follows: First, when a subscriber wants to watch a show that is currently being broadcast, he visits Aereo's website and selects, from a list of the local programming, the show he wishes to see.

Second, one of Aereo's servers selects an antenna, which it dedicates to the use of that subscriber (and that subscriber alone) for the duration of the selected show. A server then tunes the antenna to the over-the-air broadcast carrying the show. The antenna begins to receive the broadcast, and an Aereo transcoder translates the signals received into data that can be transmitted over the Internet.

Third, rather than directly send the data to the subscriber, a server saves the data in a subscriber-specific folder on Aereo's hard drive. In other words, Aereo's system creates a subscriber-specific copy—that is, a "personal" copy—of the subscriber's program of choice.

Fourth, once several seconds of programming have been saved, Aereo's server begins to stream the saved copy of the show to the subscriber over the Internet. (The subscriber may instead direct Aereo to stream the program at a later time, but that aspect of Aereo's service is not before us.) The subscriber can watch the streamed program on the screen of his personal computer, tablet, smart phone, Internet-connected television, or other Internet-connected device. The streaming continues, a mere few seconds behind the over-the-air broadcast, until the subscriber has received the entire show. See A Dictionary of Computing 494 (6th ed. 2008) (defining "streaming" as "[t]he process of providing a steady flow of audio or video data so that an Internet user is able to access it as it is transmitted").

Aereo emphasizes that the data that its system streams to each subscriber are the data from his own personal copy, made from the broadcast signals received by the particular antenna allotted to him. Its system does not transmit data saved in one subscriber's folder to any other subscriber. When two subscribers wish to watch the same program, Aereo's system activates two separate antennas and saves two separate copies of the program in two separate folders. It then streams the show to the subscribers through two separate transmissions—each from the subscriber's personal copy.

B

Petitioners are television producers, marketers, distributors, and broadcasters who own the copyrights in many of the programs that Aereo's system streams to its subscribers. They brought suit against Aereo for copyright infringement in Federal District Court. They sought a preliminary injunction, arguing that Aereo was infringing their right to "perform" their works "publicly," as the Transmit Clause defines those terms.

The District Court denied the preliminary injunction. 874 F. Supp. 2d 373 (SDNY 2012). Relying on prior Circuit precedent, a divided panel of the Second Circuit affirmed. WNET, Thirteen v. Aereo, Inc., 712 F. 3d 676 (2013) (citing Cartoon Network LP, LLLP v. CSC Holdings, Inc., 536 F. 3d 121 (2008)). In the Second Circuit's view, Aereo does not perform publicly within the meaning of the Transmit Clause because it does not transmit "to the public." Rather, each time Aereo streams a program to a subscriber, it sends a private transmission that is available only to that subscriber. The Second Circuit denied rehearing en banc, over the dissent of two judges. WNET, Thirteen v. Aereo, Inc., 722 F. 3d 500 (2013). We granted certiorari.

II

This case requires us to answer two questions: First, in operating in the manner described above, does Aereo "perform" at all? And second, if so, does Aereo do so "publicly"? We address these distinct questions in turn.

Does Aereo "perform"? See §106(4) ("[T]he owner of [a] copyright . . . has the exclusive righ[t] . . . to perform the copyrighted work publicly" (emphasis added)); §101 ("To perform . . . a work `publicly' means [among other things] to transmit . . . a performance . . . of the work . . . to the public . . ." (emphasis added)). Phrased another way, does Aereo "transmit . . . a performance" when a subscriber watches a show using Aereo's system, or is it only the subscriber who transmits? In Aereo's view, it does not perform. It does no more than supply equipment that "emulate[s] the operation of a home antenna and [digital video recorder (DVR)]." Brief for Respondent 41. Like a home antenna and DVR, Aereo's equipment simply responds to its subscribers' directives. So it is only the subscribers who "perform" when they use Aereo's equipment to stream television programs to themselves.

Considered alone, the language of the Act does not clearly indicate when an entity "perform[s]" (or "transmit[s]") and when it merely supplies equipment that allows others to do so. But when read in light of its purpose, the Act is unmistakable: An entity that engages in activities like Aereo's performs.

A

History makes plain that one of Congress' primary purposes in amending the Copyright Act in 1976 was to overturn this Court's determination that community antenna television (CATV) systems (the precursors of modern cable systems) fell outside the Act's scope. In Fortnightly Corp. v. United Artists Television, Inc., 392 U. S. 390 (1968), the Court considered a CATV system that carried local television broadcasting, much of which was copyrighted, to its subscribers in two cities. The CATV provider placed antennas on hills above the cities and used coaxial cables to carry the signals received by the antennas to the home television sets of its subscribers. The system amplified and modulated the signals in order to improve their strength and efficiently transmit them to subscribers. A subscriber "could choose any of the . . . programs he wished to view by simply turning the knob on his own television set." Id., at 392. The CATV provider "neither edited the programs received nor originated any programs of its own." Ibid.

Asked to decide whether the CATV provider infringed copyright holders' exclusive right to perform their works publicly, the Court held that the provider did not "perform" at all. See 17 U. S. C. §1(c) (1964 ed.) (granting copyright holder the exclusive right to "perform . . . in public for profit" a nondramatic literary work), §1(d) (granting copyright holder the exclusive right to "perform. . . publicly" a dramatic work). The Court drew a line: "Broadcasters perform. Viewers do not perform." 392 U. S., at 398 (footnote omitted). And a CATV provider "falls on the viewer's side of the line." Id., at 399.

The Court reasoned that CATV providers were unlike broadcasters:

"Broadcasters select the programs to be viewed; CATV systems simply carry, without editing, whatever programs they receive. Broadcasters procure programs and propagate them to the public; CATV systems receive programs that have been released to the public and carry them by private channels to additional viewers." Id., at 400.

Instead, CATV providers were more like viewers, for "the basic function [their] equipment serves is little different from that served by the equipment generally furnished by" viewers. Id., at 399. "Essentially," the Court said, "a CATV system no more than enhances the viewer's capacity to receive the broadcaster's signals [by] provid[ing] a well-located antenna with an efficient connection to the viewer's television set." Ibid. Viewers do not become performers by using "amplifying equipment," and a CATV provider should not be treated differently for providing viewers the same equipment. Id., at 398-400.

In Teleprompter Corp. v. Columbia Broadcasting System, Inc., 415 U. S. 394 (1974), the Court considered the copyright liability of a CATV provider that carried broadcast television programming into subscribers' homes from hundreds of miles away. Although the Court recognized that a viewer might not be able to afford amplifying equipment that would provide access to those distant signals, it nonetheless found that the CATV provider was more like a viewer than a broadcaster. Id., at 408-409. It explained: "The reception and rechanneling of [broadcast television signals] for simultaneous viewing is essentially a viewer function, irrespective of the distance between the broadcasting station and the ultimate viewer." Id., at 408.

The Court also recognized that the CATV system exercised some measure of choice over what to transmit. But that fact did not transform the CATV system into a broadcaster. A broadcaster exercises significant creativity in choosing what to air, the Court reasoned. Id., at 410. In contrast, the CATV provider makes an initial choice about which broadcast stations to retransmit, but then "`simply carr[ies], without editing, whatever programs [it] receive[s].'" Ibid. (quoting Fortnightly, supra, at 400 (alterations in original)).

B

In 1976 Congress amended the Copyright Act in large part to reject the Court's holdings in Fortnightly and Teleprompter. See H. R. Rep. No. 94-1476, pp. 86-87 (1976) (hereinafter H. R. Rep.) (The 1976 amendments "completely overturned" this Court's narrow construction of the Act in Fortnightly and Teleprompter). Congress enacted new language that erased the Court's line between broadcaster and viewer, in respect to "perform[ing]" a work. The amended statute clarifies that to "perform" an audiovisual work means "to show its images in any sequence or to make the sounds accompanying it audible." §101; see ibid. (defining "[a]udiovisual works" as "works that consist of a series of related images which are intrinsically intended to be shown by the use of machines . . ., together with accompanying sounds"). Under this new language, both the broadcaster and the viewer of a television program "perform," because they both show the program's images and make audible the program's sounds. See H. R. Rep., at 63 ("[A] broadcasting network is performing when it transmits [a singer's performance of a song] . . . and any individual is performing whenever he or she . . . communicates the performance by turning on a receiving set").

Congress also enacted the Transmit Clause, which specifies that an entity performs publicly when it "transmit[s]. . . a performance . . . to the public." §101; see ibid. (defining "[t]o `transmit' a performance" as "to communicate it by any device or process whereby images or sounds are received beyond the place from which they are sent"). Cable system activities, like those of the CATV systems in Fortnightly and Teleprompter, lie at the heart of the activities that Congress intended this language to cover. See H. R. Rep., at 63 ("[A] cable television system is performing when it retransmits [a network] broadcast to its subscribers"); see also ibid. ("[T]he concep[t] of public performance. . . cover[s] not only the initial rendition or showing, but also any further act by which that rendition or showing is transmitted or communicated to the public"). The Clause thus makes clear that an entity that acts like a CATV system itself performs, even if when doing so, it simply enhances viewers' ability to receive broadcast television signals.

Congress further created a new section of the Act to regulate cable companies' public performances of copyrighted works. See §111. Section 111 creates a complex, highly detailed compulsory licensing scheme that sets out the conditions, including the payment of compulsory fees, under which cable systems may retransmit broadcasts. H. R. Rep., at 88 (Section 111 is primarily "directed at the operation of cable television systems and the terms and conditions of their liability for the retransmission of copyrighted works").

Congress made these three changes to achieve a similar end: to bring the activities of cable systems within the scope of the Copyright Act.

C

This history makes clear that Aereo is not simply an equipment provider. Rather, Aereo, and not just its subscribers, "perform[s]" (or "transmit[s]"). Aereo's activities are substantially similar to those of the CATV companies that Congress amended the Act to reach. See id., at 89 ("[C]able systems are commercial enterprises whose basic retransmission operations are based on the carriage of copyrighted program material"). Aereo sells a service that allows subscribers to watch television programs, many of which are copyrighted, almost as they are being broadcast. In providing this service, Aereo uses its own equipment, housed in a centralized warehouse, outside of its users' homes. By means of its technology (antennas, transcoders, and servers), Aereo's system "receive[s] programs that have been released to the public and carr[ies] them by private channels to additional viewers." Fortnightly, 392 U. S., at 400. It "carr[ies] . . . whatever programs [it] receive[s]," and it offers "all the programming" of each over-the-air station it carries. Id., at 392, 400.

Aereo's equipment may serve a "viewer function"; it may enhance the viewer's ability to receive a broadcaster's programs. It may even emulate equipment a viewer could use at home. But the same was true of the equipment that was before the Court, and ultimately before Congress, in Fortnightly and Teleprompter.

We recognize, and Aereo and the dissent emphasize, one particular difference between Aereo's system and the cable systems at issue in Fortnightly and Teleprompter. The systems in those cases transmitted constantly; they sent continuous programming to each subscriber's television set. In contrast, Aereo's system remains inert until a subscriber indicates that she wants to watch a program. Only at that moment, in automatic response to the subscriber's request, does Aereo's system activate an antenna and begin to transmit the requested program.

This is a critical difference, says the dissent. It means that Aereo's subscribers, not Aereo, "selec[t] the copyrighted content" that is "perform[ed]," post, at 4 (opinion of SCALIA, J.), and for that reason they, not Aereo, "transmit" the performance. Aereo is thus like "a copy shop that provides its patrons with a library card." Post, at 5. A copy shop is not directly liable whenever a patron uses the shop's machines to "reproduce" copyrighted materials found in that library. See §106(1) ("exclusive righ[t] . . . to reproduce the copyrighted work"). And by the same token, Aereo should not be directly liable whenever its patrons use its equipment to "transmit" copyrighted television programs to their screens.

In our view, however, the dissent's copy shop argument, in whatever form, makes too much out of too little. Given Aereo's overwhelming likeness to the cable companies targeted by the 1976 amendments, this sole technological difference between Aereo and traditional cable companies does not make a critical difference here. The subscribers of the Fortnightly and Teleprompter cable systems also selected what programs to display on their receiving sets. Indeed, as we explained in Fortnightly, such a subscriber "could choose any of the . . . programs he wished to view by simply turning the knob on his own television set." 392 U. S., at 392. The same is true of an Aereo subscriber. Of course, in Fortnightly the television signals, in a sense, lurked behind the screen, ready to emerge when the subscriber turned the knob. Here the signals pursue their ordinary course of travel through the universe until today's "turn of the knob"—a click on a website—activates machinery that intercepts and reroutes them to Aereo's subscribers over the Internet. But this difference means nothing to the subscriber. It means nothing to the broadcaster. We do not see how this single difference, invisible to subscriber and broadcaster alike, could transform a system that is for all practical purposes a traditional cable system into "a copy shop that provides its patrons with a library card."

In other cases involving different kinds of service or technology providers, a user's involvement in the operation of the provider's equipment and selection of the content transmitted may well bear on whether the provider performs within the meaning of the Act. But the many similarities between Aereo and cable companies, considered in light of Congress' basic purposes in amending the Copyright Act, convince us that this difference is not critical here. We conclude that Aereo is not just an equipment supplier and that Aereo "perform[s]."

III

Next, we must consider whether Aereo performs petitioners' works "publicly," within the meaning of the Transmit Clause. Under the Clause, an entity performs a work publicly when it "transmit[s] . . . a performance . . . of the work . . . to the public." §101. Aereo denies that it satisfies this definition. It reasons as follows: First, the "performance" it "transmit[s]" is the performance created by its act of transmitting. And second, because each of these performances is capable of being received by one and only one subscriber, Aereo transmits privately, not publicly. Even assuming Aereo's first argument is correct, its second does not follow.

We begin with Aereo's first argument. What performance does Aereo transmit? Under the Act, "[t]o `transmit' a performance . . . is to communicate it by any device or process whereby images or sounds are received beyond the place from which they are sent." Ibid. And "[t]o `perform'" an audiovisual work means "to show its images in any sequence or to make the sounds accompanying it audible." Ibid.

Petitioners say Aereo transmits a prior performance of their works. Thus when Aereo retransmits a network's prior broadcast, the underlying broadcast (itself a performance) is the performance that Aereo transmits. Aereo, as discussed above, says the performance it transmits is the new performance created by its act of transmitting. That performance comes into existence when Aereo streams the sounds and images of a broadcast program to a subscriber's screen.

We assume arguendo that Aereo's first argument is correct. Thus, for present purposes, to transmit a performance of (at least) an audiovisual work means to communicate contemporaneously visible images and contemporaneously audible sounds of the work. Cf. United States v. American Soc. of Composers, Authors and Publishers, 627 F. 3d 64, 73 (CA2 2010) (holding that a download of a work is not a performance because the data transmitted are not "contemporaneously perceptible"). When an Aereo subscriber selects a program to watch, Aereo streams the program over the Internet to that subscriber. Aereo thereby "communicate[s]" to the subscriber, by means of a "device or process," the work's images and sounds. §101. And those images and sounds are contemporaneously visible and audible on the subscriber's computer (or other Internet-connected device). So under our assumed definition, Aereo transmits a performance whenever its subscribers watch a program.

But what about the Clause's further requirement that Aereo transmit a performance "to the public"? As we have said, an Aereo subscriber receives broadcast television signals with an antenna dedicated to him alone. Aereo's system makes from those signals a personal copy of the selected program. It streams the content of the copy to the same subscriber and to no one else. One and only one subscriber has the ability to see and hear each Aereo transmission. The fact that each transmission is to only one subscriber, in Aereo's view, means that it does not transmit a performance "to the public."

In terms of the Act's purposes, these differences do not distinguish Aereo's system from cable systems, which do perform "publicly." Viewed in terms of Congress' regulatory objectives, why should any of these technological differences matter? They concern the behind-the-scenes way in which Aereo delivers television programming to its viewers' screens. They do not render Aereo's commercial objective any different from that of cable companies. Nor do they significantly alter the viewing experience of Aereo's subscribers. Why would a subscriber who wishes to watch a television show care much whether images and sounds are delivered to his screen via a large multisubscriber antenna or one small dedicated antenna, whether they arrive instantaneously or after a few seconds' delay, or whether they are transmitted directly or after a personal copy is made? And why, if Aereo is right, could not modern CATV systems simply continue the same commercial and consumer-oriented activities, free of copyright restrictions, provided they substitute such new technologies for old? Congress would as much have intended to protect a copyright holder from the unlicensed activities of Aereo as from those of cable companies.

The text of the Clause effectuates Congress' intent. Aereo's argument to the contrary relies on the premise that "to transmit . . . a performance" means to make a single transmission. But the Clause suggests that an entity may transmit a performance through multiple, discrete transmissions. That is because one can "transmit" or "communicate" something through a set of actions. Thus one can transmit a message to one's friends, irrespective of whether one sends separate identical e-mails to each friend or a single e-mail to all at once. So can an elected official communicate an idea, slogan, or speech to her constituents, regardless of whether she communicates that idea, slogan, or speech during individual phone calls to each constituent or in a public square.

The fact that a singular noun ("a performance") follows the words "to transmit" does not suggest the contrary. One can sing a song to his family, whether he sings the same song one-on-one or in front of all together. Similarly, one's colleagues may watch a performance of a particular play—say, this season's modern-dress version of "Measure for Measure"—whether they do so at separate or at the same showings. By the same principle, an entity may transmit a performance through one or several transmissions, where the performance is of the same work.

The Transmit Clause must permit this interpretation, for it provides that one may transmit a performance to the public "whether the members of the public capable of receiving the performance . . . receive it . . . at the same time or at different times." §101. Were the words "to transmit . . . a performance" limited to a single act of communication, members of the public could not receive the performance communicated "at different times." Therefore, in light of the purpose and text of the Clause, we conclude that when an entity communicates the same contemporaneously perceptible images and sounds to multiple people, it transmits a performance to them regardless of the number of discrete communications it makes.

We do not see how the fact that Aereo transmits via personal copies of programs could make a difference. The Act applies to transmissions "by means of any device or process." Ibid. And retransmitting a television program using user-specific copies is a "process" of transmitting a performance. A "cop[y]" of a work is simply a "material objec[t] . . . in which a work is fixed . . . and from which the work can be perceived, reproduced, or otherwise communicated." Ibid. So whether Aereo transmits from the same or separate copies, it performs the same work; it shows the same images and makes audible the same sounds. Therefore, when Aereo streams the same television program to multiple subscribers, it "transmit[s] . . . a performance" to all of them.

Moreover, the subscribers to whom Aereo transmits television programs constitute "the public." Aereo communicates the same contemporaneously perceptible images and sounds to a large number of people who are unrelated and unknown to each other. This matters because, although the Act does not define "the public," it specifies that an entity performs publicly when it performs at "any place where a substantial number of persons outside of a normal circle of a family and its social acquaintances is gathered." Ibid. The Act thereby suggests that "the public" consists of a large group of people outside of a family and friends.

Neither the record nor Aereo suggests that Aereo's subscribers receive performances in their capacities as owners or possessors of the underlying works. This is relevant because when an entity performs to a set of people, whether they constitute "the public" often depends upon their relationship to the underlying work. When, for example, a valet parking attendant returns cars to their drivers, we would not say that the parking service provides cars "to the public." We would say that it provides the cars to their owners. We would say that a car dealership, on the other hand, does provide cars to the public, for it sells cars to individuals who lack a pre-existing relationship to the cars. Similarly, an entity that transmits a performance to individuals in their capacities as owners or possessors does not perform to "the public," whereas an entity like Aereo that transmits to large numbers of paying subscribers who lack any prior relationship to the works does so perform.

Finally, we note that Aereo's subscribers may receive the same programs at different times and locations. This fact does not help Aereo, however, for the Transmit Clause expressly provides that an entity may perform publicly "whether the members of the public capable of receiving the performance . . . receive it in the same place or in separate places and at the same time or at different times." Ibid. In other words, "the public" need not be situated together, spatially or temporally. For these reasons, we conclude that Aereo transmits a performance of petitioners' copyrighted works to the public, within the meaning of the Transmit Clause.

IV

Aereo and many of its supporting amici argue that to apply the Transmit Clause to Aereo's conduct will impose copyright liability on other technologies, including new technologies, that Congress could not possibly have wanted to reach. We agree that Congress, while intending the Transmit Clause to apply broadly to cable companies and their equivalents, did not intend to discourage or to control the emergence or use of different kinds of technologies. But we do not believe that our limited holding today will have that effect.

For one thing, the history of cable broadcast transmissions that led to the enactment of the Transmit Clause informs our conclusion that Aereo "perform[s]," but it does not determine whether different kinds of providers in different contexts also "perform." For another, an entity only transmits a performance when it communicates contemporaneously perceptible images and sounds of a work. See Brief for Respondent 31 ("[I]f a distributor . . . sells [multiple copies of a digital video disc] by mail to consumers, . . . [its] distribution of the DVDs merely makes it possible for the recipients to perform the work themselves—it is not a `device or process' by which the distributor publicly performs the work" (emphasis in original)).

Further, we have interpreted the term "the public" to apply to a group of individuals acting as ordinary members of the public who pay primarily to watch broadcast television programs, many of which are copyrighted. We have said that it does not extend to those who act as owners or possessors of the relevant product. And we have not considered whether the public performance right is infringed when the user of a service pays primarily for something other than the transmission of copyrighted works, such as the remote storage of content. See Brief for United States as Amicus Curiae 31 (distinguishing cloudbased storage services because they "offer consumers more numerous and convenient means of playing back copies that the consumers have already lawfully acquired" (emphasis in original)). In addition, an entity does not transmit to the public if it does not transmit to a substantial number of people outside of a family and its social circle.

We also note that courts often apply a statute's highly general language in light of the statute's basic purposes. Finally, the doctrine of "fair use" can help to prevent inappropriate or inequitable applications of the Clause. See Sony Corp. of America v. Universal City Studios, Inc., 464 U. S. 417 (1984).

We cannot now answer more precisely how the Transmit Clause or other provisions of the Copyright Act will apply to technologies not before us. We agree with the Solicitor General that "[q]uestions involving cloud computing, [remote storage] DVRs, and other novel issues not before the Court, as to which `Congress has not plainly marked [the] course,' should await a case in which they are squarely presented." Brief for United States as Amicus Curiae 34 (quoting Sony, supra, at 431 (alteration in original)). And we note that, to the extent commercial actors or other interested entities may be concerned with the relationship between the development and use of such technologies and the Copyright Act, they are of course free to seek action from Congress. Cf. Digital Millennium Copyright Act, 17 U. S. C. §512.

* * *

In sum, having considered the details of Aereo's practices, we find them highly similar to those of the CATV systems in Fortnightly and Teleprompter. And those are activities that the 1976 amendments sought to bring within the scope of the Copyright Act. Insofar as there are differences, those differences concern not the nature of the service that Aereo provides so much as the technological manner in which it provides the service. We conclude that those differences are not adequate to place Aereo's activities outside the scope of the Act.

For these reasons, we conclude that Aereo "perform[s]" petitioners' copyrighted works "publicly," as those terms are defined by the Transmit Clause. We therefore reverse the contrary judgment of the Court of Appeals, and we remand the case for further proceedings consistent with this opinion.

It is so ordered.

JUSTICE SCALIA, with whom JUSTICE THOMAS and JUSTICE ALITO join, dissenting.

This case is the latest skirmish in the long-running copyright battle over the delivery of television program-ming. Petitioners, a collection of television networks and affiliates (Networks), broadcast copyrighted programs on the public airwaves for all to see. Aereo, respondent, operates an automated system that allows subscribers to receive, on Internet-connected devices, programs that they select, including the Networks' copyrighted programs. The Networks sued Aereo for several forms of copyright infringement, but we are here concerned with a single claim: that Aereo violates the Networks'"exclusive righ[t]" to "perform" their programs "publicly." 17 U. S. C. §106(4). That claim fails at the very outset because Aereo does not "perform" at all. The Court manages to reach the opposite conclusion only by disregarding widely accepted rules for service-provider liability and adopting in their place an improvised standard ("looks-like-cable-TV") that will sow confusion for years to come.

I. Legal Standard

There are two types of liability for copyright infringement: direct and secondary. As its name suggests, the former applies when an actor personally engages in infringing conduct. See Sony Corp. of America v. Universal City Studios, Inc., 464 U. S. 417, 433 (1984). Secondary liability, by contrast, is a means of holding defendants responsible for infringement by third parties, even when the defendants "have not themselves engaged in the infringing activity." Id., at 435. It applies when a defendant "intentionally induc[es] or encourag[es]" infringing acts by others or profits from such acts "while declining to exercise a right to stop or limit [them]." Metro-Goldwyn-Mayer Studios Inc. v. Grokster, Ltd., 545 U. S. 913, 930 (2005).

Most suits against equipment manufacturers and service providers involve secondary-liability claims. For example, when movie studios sued to block the sale of Sony's Betamax videocassette recorder (VCR), they argued that Sony was liable because its customers were making unauthorized copies. See Sony, supra, at 434-435. Record labels and movie studios relied on a similar theory when they sued Grokster and StreamCast, two providers of peer-to-peer file-sharing software. See Grokster, supra, at 920-921, 927.

This suit, or rather the portion of it before us here, is fundamentally different. The Networks claim that Aereo directly infringes their public-performance right. Accordingly, the Networks must prove that Aereo "perform[s]" copyrighted works, §106(4), when its subscribers log in, select a channel, and push the "watch" button. That process undoubtedly results in a performance; the question is who does the performing. See Cartoon Network LP, LLLP v. CSC Holdings, Inc., 536 F. 3d 121, 130 (CA2 2008). If Aereo's subscribers perform but Aereo does not, the claim necessarily fails.

The Networks' claim is governed by a simple but profoundly important rule: A defendant may be held directly liable only if it has engaged in volitional conduct that violates the Act. See 3 W. Patry, Copyright §9:5.50 (2013). This requirement is firmly grounded in the Act's text, which defines "perform" in active, affirmative terms: One "perform[s]" a copyrighted "audiovisual work," such as a movie or news broadcast, by "show[ing] its images in any sequence" or "mak[ing] the sounds accompanying it audible." §101. And since the Act makes it unlawful to copy or perform copyrighted works, not to copy or perform in general, see §501(a), the volitional-act requirement demands conduct directed to the plaintiff's copyrighted material, see Sony, supra, at 434. Every Court of Appeals to have considered an automated-service provider's direct liability for copyright infringement has adopted that rule. See Fox Broadcasting Co. v. Dish Network LLC, 747 F. 3d 1060, 1066-1068 (CA9 2014); Cartoon Network, supra, at 130-131 (CA2 2008); CoStar Group, Inc. v. LoopNet, Inc., 373 F. 3d 544, 549-550 (CA4 2004).^[1] Although we have not opined on the issue, our cases are fully consistent with a volitional-conduct requirement. For example, we gave several examples of direct infringement in Sony, each of which involved a volitional act directed to the plaintiff's copyrighted material. See 464 U. S., at 437, n. 18.

The volitional-conduct requirement is not at issue in most direct-infringement cases; the usual point of dispute is whether the defendant's conduct is infringing (e.g., Does the defendant's design copy the plaintiff's?), rather than whether the defendant has acted at all (e.g., Did this defendant create the infringing design?). But it comes right to the fore when a direct-infringement claim is lodged against a defendant who does nothing more than operate an automated, user-controlled system. See, e.g., Fox Broadcasting, supra, at 1067; Cartoon Network, supra, at 131. Internet-service providers are a prime example. When one user sends data to another, the provider's equipment facilitates the transfer automatically. Does that mean that the provider is directly liable when the transmission happens to result in the "reproduc[tion]," §106(1), of a copyrighted work? It does not. The provider's system is "totally indifferent to the material's content," whereas courts require "some aspect of volition" directed at the copyrighted material before direct liability may be imposed. CoStar, 373 F. 3d, at 550-551.^[2] The defendant may be held directly liable only if the defendant itself "trespassed on the exclusive domain of the copyright owner." Id., at 550. Most of the time that issue will come down to who selects the copyrighted content: the defendant or its customers. See Cartoon Network, supra, at 131-132.

A comparison between copy shops and video-on-demand services illustrates the point. A copy shop rents out photocopiers on a per-use basis. One customer might copy his 10-year-old's drawings—a perfectly lawful thing to do— while another might duplicate a famous artist's copyrighted photographs—a use clearly prohibited by §106(1). Either way, the customer chooses the content and activates the copying function; the photocopier does nothing except in response to the customer's commands. Because the shop plays no role in selecting the content, it cannot be held directly liable when a customer makes an infringing copy. See CoStar, supra, at 550.

Video-on-demand services, like photocopiers, respond automatically to user input, but they differ in one crucial respect: They choose the content. When a user signs in to Netflix, for example, "thousands of . . . movies [and] TV episodes" carefully curated by Netflix are "available to watch instantly." See How [D]oes Netflix [W]ork?, online at http://help.netflix.com/en/node/412 (as visited June 20, 2014, and available in Clerk of Court's case file). That selection and arrangement by the service provider constitutes a volitional act directed to specific copyrighted works and thus serves as a basis for direct liability.

The distinction between direct and secondary liability would collapse if there were not a clear rule for determining whether the defendant committed the infringing act. See Cartoon Network, 536 F. 3d, at 132-133. The volitional-conduct requirement supplies that rule; its purpose is not to excuse defendants from accountability, but to channel the claims against them into the correct analytical track. See Brief for 36 Intellectual Property and Copyright Law Professors as Amici Curiae 7. Thus, in the example given above, the fact that the copy shop does not choose the content simply means that its culpability will be assessed using secondary-liability rules rather than direct-liability rules. See Sony, supra, at 434-442; Cartoon Network, supra, at 132-133.

II. Application to Aereo

So which is Aereo: the copy shop or the video-on-demand service? In truth, it is neither. Rather, it is akin to a copy shop that provides its patrons with a library card. Aereo offers access to an automated system consisting of routers, servers, transcoders, and dime-sized antennae. Like a photocopier or VCR, that system lies dormant until a subscriber activates it. When a subscriber selects a program, Aereo's system picks up the relevant broadcast signal, translates its audio and video components into digital data, stores the data in a user-specific file, and transmits that file's contents to the subscriber via the Internet—at which point the subscriber's laptop, tablet, or other device displays the broadcast just as an ordinary television would. The result of that process fits the statutory definition of a performance to a tee: The subscriber's device "show[s]" the broadcast's "images" and "make[s] the sounds accompanying" the broadcast "audible." §101. The only question is whether those performances are the product of Aereo's volitional conduct.

They are not. Unlike video-on-demand services, Aereo does not provide a prearranged assortment of movies and television shows. Rather, it assigns each subscriber an antenna that—like a library card—can be used to obtain whatever broadcasts are freely available. Some of those broadcasts are copyrighted; others are in the public domain. The key point is that subscribers call all the shots: Aereo's automated system does not relay any program, copyrighted or not, until a subscriber selects the program and tells Aereo to relay it. Aereo's operation of that system is a volitional act and a but-for cause of the resulting performances, but, as in the case of the copy shop, that degree of involvement is not enough for direct liability. See Grokster, 545 U. S., at 960 (BREYER, J., concurring) ("[T]he producer of a technology which permits unlawful copying does not himself engage in unlawful copying").

In sum, Aereo does not "perform" for the sole and simple reason that it does not make the choice of content. And because Aereo does not perform, it cannot be held directly liable for infringing the Networks' public-performance right.^[3] That conclusion does not necessarily mean that Aereo's service complies with the Copyright Act. Quite the contrary. The Networks' complaint alleges that Aereo is directly and secondarily liable for infringing their publicperformance rights (§106(4)) and also their reproduction rights (§106(1)). Their request for a preliminary injunction—the only issue before this Court—is based exclusively on the direct-liability portion of the public-performance claim (and further limited to Aereo's "watch" function, as opposed to its "record" function). See App. to Pet. for Cert. 60a-61a. Affirming the judgment below would merely return this case to the lower courts for consideration of the Networks' remaining claims.

III. Guilt By Resemblance

The Court's conclusion that Aereo performs boils down to the following syllogism: (1) Congress amended the Act to overrule our decisions holding that cable systems do not perform when they retransmit over-the-air broadcasts;^[4] (2) Aereo looks a lot like a cable system; therefore (3) Aereo performs. Ante, at 4-10. That reasoning suffers from a trio of defects.

First, it is built on the shakiest of foundations. Perceiving the text to be ambiguous, ante, at 4, the Court reaches out to decide the case based on a few isolated snippets of legislative history, ante, at 7-8 (citing H. R. Rep. No. 94-1476 (1976)). The Court treats those snippets as authoritative evidence of congressional intent even though they come from a single report issued by a committee whose members make up a small fraction of one of the two Houses of Congress. Little else need be said here about the severe shortcomings of that interpretative methodology. See Lawson v. FMR LLC, 571 U. S. ___, ___ (2014) (SCALIA, J., concurring in principal part and concurring in judgment) (slip op., at 1-2).

Second, the Court's reasoning fails on its own terms because there are material differences between the cable systems at issue in Teleprompter Corp. v. Columbia Broadcasting System, Inc., 415 U. S. 394 (1974), and Fortnightly Corp. v. United Artists Television, Inc., 392 U. S. 390 (1968), on the one hand and Aereo on the other. The former (which were then known as community-antenna television systems) captured the full range of broadcast signals and forwarded them to all subscribers at all times, whereas Aereo transmits only specific programs selected by the user, at specific times selected by the user. The Court acknowledges this distinction but blithely concludes that it "does not make a critical difference." Ante, at 10. Even if that were true, the Court fails to account for other salient differences between the two technologies.^[5] Though cable systems started out essentially as dumb pipes that routed signals from point A to point B, see ante, at 5, by the 1970's, that kind of service "`no longer exist[ed],'" Brief for Petitioners in Columbia Broadcasting System, Inc. v. Teleprompter Corp., O. T. 1973, No. 72-1633, p. 22. At the time of our Teleprompter decision, cable companies "perform[ed] the same functions as `broadcasters' by deliberately selecting and importing distant signals, originating programs, [and] selling commercials," id., at 20, thus making them curators of content—more akin to video-ondemand services than copy shops. So far as the record reveals, Aereo does none of those things.

Third, and most importantly, even accepting that the 1976 amendments had as their purpose the overruling of our cable-TV cases, what they were meant to do and how they did it are two different questions—and it is the latter that governs the case before us here. The injury claimed is not violation of a law that says operations similar to cable TV are subject to copyright liability, but violation of §106(4) of the Copyright Act. And whatever soothing reasoning the Court uses to reach its result ("this looks like cable TV"), the consequence of its holding is that someone who implements this technology "perform[s]" under that provision. That greatly disrupts settled jurisprudence which, before today, applied the straightforward, bright-line test of volitional conduct directed at the copyrighted work. If that test is not outcome determinative in this case, presumably it is not outcome determinative elsewhere as well. And it is not clear what the Court proposes to replace it. Perhaps the Court means to adopt (invent, really) a two-tier version of the Copyright Act, one part of which applies to "cable companies and their equivalents" while the other governs everyone else. Ante, at 9-10, 16.

The rationale for the Court's ad hoc rule for cablesystem lookalikes is so broad that it renders nearly a third of the Court's opinion superfluous. Part II of the opinion concludes that Aereo performs because it resembles a cable company, and Congress amended the Act in 1976 "to bring the activities of cable systems within [its] scope." Ante, at 8. Part III of the opinion purports to address separately the question whether Aereo performs "publicly." Ante, at 10-15. Trouble is, that question cannot remain open if Congress's supposed intent to regulate whatever looks like a cable company must be given legal effect (as the Court says in Part II). The Act reaches only public performances, see §106(4), so Congress could not have regulated "the activities of cable systems" without deeming their retransmissions public performances. The upshot is this: If Aereo's similarity to a cable company means that it performs, then by necessity that same characteristic means that it does so publicly, and Part III of the Court's opinion discusses an issue that is no longer relevant—though discussing it certainly gives the opinion the "feel" of real textual analysis.

Making matters worse, the Court provides no criteria for determining when its cable-TV-lookalike rule applies. Must a defendant offer access to live television to qualify? If similarity to cable-television service is the measure, then the answer must be yes. But consider the implications of that answer: Aereo would be free to do exactly what it is doing right now so long as it built mandatory time shifting into its "watch" function.^[6] Aereo would not be providing live television if it made subscribers wait to tune in until after a show's live broadcast ended. A subscriber could watch the 7 p.m. airing of a 1-hour program any time after 8 p.m. Assuming the Court does not intend to adopt such a do-nothing rule (though it very well may), there must be some other means of identifying who is and is not subject to its guilt-by-resemblance regime.

Two other criteria come to mind. One would cover any automated service that captures and stores live television broadcasts at a user's direction. That can't be right, since it is exactly what remote storage digital video recorders (RS-DVRs) do, see Cartoon Network, 536 F. 3d, at 124-125, and the Court insists that its "limited holding" does not decide the fate of those devices, ante, at 16-17. The other potential benchmark is the one offered by the Government: The cable-TV-lookalike rule embraces any entity that "operates an integrated system, substantially dependent on physical equipment that is used in common by [its] subscribers." Brief for United States as Amicus Curiae 20. The Court sensibly avoids that approach because it would sweep in Internet service providers and a host of other entities that quite obviously do not perform.

That leaves as the criterion of cable-TV-resemblance nothing but th'ol' totality-of-the-circumstances test (which is not a test at all but merely assertion of an intent to perform test-free, ad hoc, case-by-case evaluation). It will take years, perhaps decades, to determine which automated systems now in existence are governed by the traditional volitional-conduct test and which get the Aereo treatment. (And automated systems now in contemplation will have to take their chances.) The Court vows that its ruling will not affect cloud-storage providers and cabletelevision systems, see ante, at 16-17, but it cannot deliver on that promise given the imprecision of its result-driven rule. Indeed, the difficulties inherent in the Court's makeshift approach will become apparent in this very case. Today's decision addresses the legality of Aereo's "watch" function, which provides nearly contemporaneous access to live broadcasts. On remand, one of the first questions the lower courts will face is whether Aereo's "record" function, which allows subscribers to save a program while it is airing and watch it later, infringes the Networks' public-performance right. The volitionalconduct rule provides a clear answer to that question: Because Aereo does not select the programs viewed by its users, it does not perform. But it is impossible to say how the issue will come out under the Court's analysis, since cable companies did not offer remote recording and playback services when Congress amended the Copyright Act in 1976.

* * *

I share the Court's evident feeling that what Aereo is doing (or enabling to be done) to the Networks' copyrighted programming ought not to be allowed. But perhaps we need not distort the Copyright Act to forbid it. As discussed at the outset, Aereo's secondary liability for performance infringement is yet to be determined, as is its primary and secondary liability for reproduction infringement. If that does not suffice, then (assuming one shares the majority's estimation of right and wrong) what we have before us must be considered a "loophole" in the law. It is not the role of this Court to identify and plug loopholes. It is the role of good lawyers to identify and exploit them, and the role of Congress to eliminate them if it wishes. Congress can do that, I may add, in a much more targeted, better informed, and less disruptive fashion than the crude "looks-like-cable-TV" solution the Court invents today.

We came within one vote of declaring the VCR contraband 30 years ago in Sony. See 464 U. S., at 441, n. 21. The dissent in that case was driven in part by the plaintiffs' prediction that VCR technology would wreak all manner of havoc in the television and movie industries. See id., at 483 (opinion of Blackmun, J.); see also Brief for CBS, Inc., as Amicus Curiae, O. T. 1982, No. 81-1687, p. 2 (arguing that VCRs "directly threatened" the bottom line of "[e]very broadcaster").

The Networks make similarly dire predictions about Aereo. We are told that nothing less than "the very existence of broadcast television as we know it" is at stake. Brief for Petitioners 39. Aereo and its amici dispute those forecasts and make a few of their own, suggesting that a decision in the Networks' favor will stifle technological innovation and imperil billions of dollars of investments in cloud-storage services. See Brief for Respondents 48-51; Brief for BSA, The Software Alliance as Amicus Curiae 5-13. We are in no position to judge the validity of those self-interested claims or to foresee the path of future technological development. See Sony, supra, at 430-431; see also Grokster, 545 U. S., at 958 (BREYER, J., concurring). Hence, the proper course is not to bend and twist the Act's terms in an effort to produce a just outcome, but to apply the law as it stands and leave to Congress the task of deciding whether the Copyright Act needs an upgrade. I conclude, as the Court concluded in Sony: "It may well be that Congress will take a fresh look at this new technology, just as it so often has examined other innovations in the past. But it is not our job to apply laws that have not yet been written. Applying the copyright statute, as it now reads, to the facts as they have been developed in this case, the judgment of the Court of Appeals must be [affirmed]." 464 U. S., at 456.

I respectfully dissent.

[1] An unpublished decision of the Third Circuit is to the same effect. Parker v. Google, Inc., 242 Fed. Appx. 833, 836-837 (2007) (per curiam).

The Networks muster only one case they say stands for a different approach, New York Times Co. v. Tasini, 533 U. S. 483 (2001). Reply Brief 18. But Tasini is clearly inapposite; it dealt with the question whether the defendants' copying was permissible, not whether the defendants were the ones who made the copies. See 533 U. S., at 487-488, 492, 504-506.

[2] Congress has enacted several safe-harbor provisions applicable to automated network processes, see, e.g., 17 U. S. C. §512(a)-(b), but those provisions do not foreclose "any other defense," §512(l), including a volitional-conduct defense.

[3] Because I conclude that Aereo does not perform at all, I do not reach the question whether the performances in this case are to the public. See ante, at 10-15.

[4] See Teleprompter Corp. v. Columbia Broadcasting System, Inc., 415 U. S. 394 (1974); Fortnightly Corp. v. United Artists Television, Inc., 392 U. S. 390 (1968).

[5] The Court observes that "[t]he subscribers of the Fortnightly and Teleprompter cable systems . . . selected what programs to display on their receiving sets," but acknowledges that those choices were possible only because "the television signals, in a sense, lurked behind the screen, ready to emerge when the subscriber turned the knob." Ante, at 10. The latter point is dispositive: The signals were "ready to emerge" because the cable system—much like a video-on-demand provider— took affirmative, volitional steps to put them there. As discussed above, the same cannot be said of the programs available through Aereo's automated system.

[6] Broadcasts accessible through the "watch" function are technically not live because Aereo's servers take anywhere from a few seconds to a few minutes to begin transmitting data to a subscriber's device. But the resulting delay is so brief that it cannot reasonably be classified as time shifting.