Cox Communications, Inc. v. Sony Music Entertainment

Facts

Cox Communications is an Internet service provider serving six million subscribers. MarkMonitor, hired by Sony Music and other copyright owners, detected copyright infringement activity and sent Cox 163,148 notices identifying subscriber IP addresses associated with piracy. Sony sued Cox for secondary copyright liability, alleging both contributory infringement (providing service knowing customers would infringe) and vicarious liability (failing to control customer infringement). A jury found Cox liable on both theories and awarded $1 billion in damages for willful infringement.

Issue

Whether an internet service provider that receives repeated copyright infringement notices but fails to terminate the accounts of repeat infringers loses the safe harbor protection of the Digital Millennium Copyright Act, and whether such an ISP may be held secondarily liable for contributory or vicarious copyright infringement.

Rule

The DMCA's safe harbor provision (17 U.S.C. § 512(a)) protects qualifying ISPs from secondary copyright liability for transitory data transmissions if the ISP has adopted and reasonably implemented a policy for terminating repeat infringers. Contributory infringement requires knowledge of infringing activity and a material contribution to it. Vicarious liability requires the right and ability to control the infringing activity plus direct financial benefit. Courts have held that ISPs that turn a blind eye to repeat infringers despite DMCA notices may forfeit safe harbor protection.

Analysis

The Internet created a problem for copyright owners. Millions of people upload and download music without paying. ISPs sit in the middle. They provide the pipes but have limited visibility into customer conduct. They know their IP addresses sometimes map to infringing conduct (because copyright holders send notices), but they do not control individual users' behavior. Sony faced a choice: sue the uploaders (often judgment-proof), sue the ISP (a solvent corporation), or negotiate licensing. The case became a proxy for who bears the burden of copyright enforcement in a decentralized network.

Conclusion

The Supreme Court held that Cox Communications is not contributorily liable because it neither affirmatively induced infringement nor provided a service tailored to that infringement. Merely continuing to provide Internet service to subscribers known to be infringing does not constitute the intent required for contributory liability. The judgment for Sony on the contributory liability theory was reversed.

The decision reaffirms that secondary copyright liability requires more than knowledge. It requires conduct aimed at infringement or a service architecture designed for it. General-purpose tools and services get protection, even if some users misuse them. This principle matters not just for ISPs but for search engines, cloud services, and all infrastructure providers who serve millions of users and inevitably encounter infringement.