Cox Ruling Reshapes Piracy Enforcement as Supreme Court Limits ISP Liability

The US Supreme Court has unanimously ruled that internet service providers cannot be held liable for copyright infringement carried out by their users, delivering a major win for the broadband sector and a setback for global record labels.

The decision overturns a long-running legal battle between Cox Communications and a coalition of rights holders including Universal Music Group, Sony Music Entertainment and Warner Music Group, who initially secured a $1 billion jury award in 2019 over claims Cox failed to adequately respond to repeated piracy notices.

At the centre of the case was whether Cox could be held responsible for “contributory infringement” — effectively, whether providing internet access while being aware that some users were engaging in piracy amounted to facilitating copyright breaches.

In the Court’s opinion, Justice Clarence Thomas drew a clear line around that argument.

“Under our precedents, a company 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,” he wrote.

The ruling reinforces a key principle: access providers are not obligated to police user behaviour at scale, even when notified of infringement activity. Importantly, the Court rejected the idea that failing to terminate subscriber accounts accused of piracy constitutes sufficient grounds for liability.

For ISPs, the decision removes a significant legal risk that had the potential to reshape how broadband providers manage user access and enforcement protocols. Cox framed the outcome as a broader win for infrastructure providers and consumers, positioning it as a rejection of what it described as attempts to force “mass evictions from the internet.”

From a music industry perspective, however, the outcome narrows one of the more aggressive legal pathways used to target piracy at the network level.

Recording Industry Association of America (RIAA) chairman and CEO Mitch Glazier said the organisation was “disappointed” with the decision, arguing it undermines efforts to hold intermediaries accountable in cases where large-scale infringement occurs.

“The Court’s decision is narrow,” Glazier noted, emphasising that it applies specifically to contributory infringement claims involving companies that do not directly host or distribute infringing material.

That distinction is critical. The ruling does not impact liability frameworks for platforms that actively store, stream or monetise copyrighted content, meaning digital service providers like streaming platforms and user-upload sites remain subject to existing enforcement regimes.

Still, the decision signals a shift in how far rights holders can push enforcement upstream.

For labels and publishers, it limits the ability to leverage ISPs as a pressure point in anti-piracy strategies — particularly in cases built around notice-and-termination systems. For telcos and broadband providers, it offers greater clarity and protection at a time when data traffic and content consumption continue to surge.

The case had already been in flux prior to the Supreme Court’s involvement, with a US appeals court in 2024 overturning the original $1 billion damages award and ordering a retrial to reassess the penalty.

With the Supreme Court now rejecting liability altogether under this theory, that pathway has effectively been closed.

For the global music business, the focus now shifts back to platform-level enforcement, licensing frameworks, and legislative advocacy, rather than relying on infrastructure providers as a frontline defence against piracy.