The Supreme Court unanimously reversed a $1 billion copyright infringement verdict against Cox Communications on Wednesday, ruling 9-0 that an internet service provider is not liable as a copyright infringer for "merely providing a service to the general public with knowledge that it will be used by some to infringe copyrights." Justice Clarence Thomas wrote the majority opinion. The ruling overturned the 2019 Alexandria, Virginia jury verdict that had found Cox liable for both contributory and vicarious infringement of more than 10,000 songs by 50-plus record labels including Sony Music, Warner Music Group, and Universal Music Group. Fox Business confirmed the ruling under the headline "Supreme Court tosses $1B copyright verdict," while NPR reported on the broader implications for ISP liability and the entertainment industry.

The case centered on whether Cox bore legal responsibility for subscribers who used its internet service to illegally download music through file-sharing networks. The record labels argued Cox was willfully blind to rampant infringement on its network and failed to terminate repeat infringers aggressively enough despite receiving notice after notice of violations. Cox countered that holding ISPs liable for user behavior would threaten internet access for "entire households, coffee shops, hospitals, universities" — essentially anyone whose internet connection is used by one person to infringe would risk losing service for all connected users.

Justice Sotomayor filed a concurrence in the judgment but expressed concern that the majority's reasoning "unnecessarily limits secondary liability" in ways that could hamper future copyright enforcement efforts in contexts beyond the specific facts of the Cox case. She agreed the billion-dollar verdict should be thrown out but cautioned that the Thomas majority went further than required to reach that result. The Court of Appeals had previously ordered a potential retrial by throwing out the damages award in 2024; the Supreme Court's ruling goes further by resolving the liability questions in Cox's favor rather than merely remanding for further proceedings.

The ruling has significant implications for the broader debate over internet platform liability. Entertainment industry groups warned the decision creates a roadmap for ISPs to avoid accountability for hosting or facilitating copyright infringement at scale. Technology and civil liberties groups celebrated it as protection for service providers from being held responsible for conduct they cannot fully monitor or control. The decision arrives as Congress is separately debating revisions to Section 230 liability protections for online platforms — a distinct but related legal framework — making the Cox ruling a significant data point in the ongoing battle over where legal responsibility falls when internet infrastructure enables harmful or unlawful activity.