Third Circuit Rejects Fair Use for ROSS’s Copying of Westlaw Headnotes

The Third Circuit held on September 29, 2026 that 2,243 Westlaw headnotes are original enough for copyright protection and that ROSS Intelligence’s copying of them to train a legal-research AI was not fair use. The court affirmed partial summary judgment for Thomson Reuters in what appears to be the first federal appellate ruling on fair use in AI training….
By: Haynes Boone