Cox v. Sony is a March 2026 Supreme Court decision on contributory copyright infringement. The Court ruled unanimously to reverse a $1 billion contributory-liability verdict that record labels led by Sony had won against internet service provider Cox Communications over subscriber piracy, holding that secondary liability attaches only when a company induces infringement or builds a product tailored for infringement (Source: broadbandbreakfast.com).
Relevance to AI litigation
Although the case involved an internet service provider rather than an AI developer, the ruling's standard for secondary liability has been read as a defense template for the AI copyright docket. Electronic Frontier Foundation legal director Corynne McSherry said on July 15, 2026 that the ruling gives AI developers a "clean, clear" defense against claims that models are "infringement machines" in the roughly 100 copyright suits then pending against them: under the Cox standard, a plaintiff would need to show that a developer induced infringement or built a model tailored for it, rather than that the model is merely capable of producing infringing output (Source: broadbandbreakfast.com).
The ruling bears on the secondary-liability theories in cases tracked at AI Copyright Litigation — Analysis, including NYT v. OpenAI, Kadrey v. Meta, Hachette et al. v. Google (Gemini training data), and UMG Recordings v. Suno (AI music training data); it does not resolve the distinct question whether training on scraped copyrighted data is fair use (see AI Copyright).
Relationships
- related: AI Copyright, AI Copyright Litigation — Analysis, Electronic Frontier Foundation (EFF)
- supports: the fair-use/no-secondary-liability defense posture of AI-developer defendants in NYT v. OpenAI, Kadrey v. Meta, UMG Recordings v. Suno (AI music training data)
Confidence note: Medium — single secondary source; the holding is consistently described across the two digest citations but not yet verified against the opinion.