Page:United States Reports, Volume 545.djvu/965

 Syllabus METRO GOLDWYN MAYER STUDIOS INC. et al. v. GROKSTER, LTD., et al.

CERTIORARI TO THE UNITED STATES COURT OF APPEALS FOR THE NINTH CIRCUIT

No. 04–480. Argued March 29, 2005—Decided June 27, 2005 Respondent companies distribute free software that allows computer users to share electronic files through peer-to-peer networks, so called because the computers communicate directly with each other, not through central servers. Although such networks can be used to share any type of digital file, recipients of respondents’ software have mostly used them to share copyrighted music and video files without authorization. Seeking damages and an injunction, a group of movie studios and other copyright holders (hereinafter MGM) sued respondents for their users’ copyright infringements, alleging that respondents knowingly and intentionally distributed their software to enable users to infringe copyrighted works in violation of the Copyright Act.

Discovery revealed that billions of files are shared across peer-to-peer networks each month. Respondents are aware that users employ their software primarily to download copyrighted files, although the decentralized networks do not reveal which files are copied, and when. Respondents have sometimes learned about the infringement directly when users have e-mailed questions regarding copyrighted works, and respondents have replied with guidance. Respondents are not merely passive recipients of information about infringement. The record is replete with evidence that when they began to distribute their free software, each of them clearly voiced the objective that recipients use the software to download copyrighted works and took active steps to encourage infringement. After the notorious file-sharing service, Napster, was sued by copyright holders for facilitating copyright infringement, both respondents promoted and marketed themselves as Napster alternatives. They receive no revenue from users, but, instead, generate income by selling advertising space, then streaming the advertising to their users. As the number of users increases, advertising opportunities are worth more. There is no evidence that either respondent made an effort to filter copyrighted material from users’ downloads or otherwise to impede the sharing of copyrighted files.

While acknowledging that respondents’ users had directly infringed MGM’s copyrights, the District Court nonetheless granted respondents summary judgment as to liability arising from distribution of their