Third Circuit Addresses Fair Use In AI Training, But Leaves Generative AI Questions Unresolved

The U.S. Third Circuit ruled that using Thomson Reuters' copyrighted Westlaw headnotes to train ROSS Intelligence's AI legal research product did not qualify as fair use, emphasizing harm to existing and emerging licensing markets. However, the court left unresolved whether training generative AI models on copyrighted expressive works constitutes fair use.

This Wire brief sits within Fusion42's coverage of AI & ML, and 8 sources have reported it between 29 Sep 2026 and 5 Oct 2026.