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AI Training And Fair Use After The First Appellate Ruling: Thomson Reuters v. ROSS (3d Cir. 2026)
ROSS Intelligence set out to build an AI legal-research tool to compete with Westlaw. After Thomson Reuters declined to license Westlaw content, ROSS obtained training material through a third party: thousands of “bulk memos,” question-and-answer pairs that were built from Westlaw headnotes. ROSS used them to train its search tool. Thomson Reute
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