The U.S. Supreme Court has ruled that internet service provider Cox Communications is not contributorily liable for copyright infringement carried out by its subscribers. This unanimous landmark decision is a significant victory for ISPs nationwide.
Copyright Infringement Claims Mostly Ignored
Sony Music and other rights holders sued Cox after the ISP received over 163,000 infringement notices but terminated only 32 subscriber accounts. Sony argued Cox’s inaction made it complicit. Cox countered that identifying individual infringers from IP addresses alone is unreliable. The company maintains that it provides a general-purpose service with countless legitimate uses.
The Court’s Legal Standard
Justice Clarence Thomas held that contributory liability requires either that a provider induced the infringement or that its service was specifically tailored to enable it. A ruling against Cox would mean that the service lacks substantial non-infringing uses. Simply knowing some users engage in infringement is not enough to establish liability. According to the court’s ruling, Cox neither encouraged infringement nor designed its service around it.
The DMCA Clarification
The Court also addressed an important secondary point: failing to terminate repeat infringers does not, in itself, create legal liability under the DMCA. The safe harbor provision is a defense ISPs may use, not an obligation whose violation generates new liability.
The Concurrence
Justice Sotomayor, joined by Justice Jackson, agreed with the outcome but cautioned that the majority’s reasoning unnecessarily foreclosed other potential liability theories, such as common law aiding and abetting.
Why This Decision Matters
The ruling effectively ends Sony’s pursuit of its $1 billion damages award. It also firmly rejects the expansion of the contributory infringement doctrine that some lower courts had begun embracing. For ISPs and other service platforms, the decision provides meaningful legal clarity. However, providers are still advised to maintain reasonable anti-infringement policies to avoid the liability pathways the Court left open.