Development · Tue 29 Sep, Wed 30 Sep
Third Circuit holds Westlaw's 2,243 headnotes copyrightable and ROSS's AI training not fair useThe opinion in No. 25-2153, Thomson Reuters Enterprise Centre GmbH and West Publishing Corp v. ROSS Intelligence Inc, was argued 11 June 2026 and filed 29 September 2026 before Judges Restrepo, Montgomery-Reeves and Bove, with Judge Montgomery-Reeves writing. It holds: "Because Thomson Reuters's 2,243 headnotes are original enough for copyright protection and ROSS's use of the headnotes was not fair, we will AFFIRM."
Open question
Does the Third Circuit's reasoning apply to models that generate text, or only to ones that retrieve it?The court expressly reserved the question. Footnote 7 states that "Unlike the AI models in Bartz and In re: OpenAI, ROSS's AI platform cannot generate original expression", and cites Bartz v. Anthropic PBC, Kadrey v. Meta Platforms and the Justice Department's statement of interest in the OpenAI litigation without deciding them. Reuters reported on 30 September that the court’s reasoning was sealed, and MediaPost that the opinion was temporarily sealed pending the parties’ confidentiality requests and expected to be unsealed afterwards.