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LexisNexis backs Thomson Reuters in US copyright case over headnotes

( November 26, 2025, 15:03 GMT | Official Statement) -- MLex Summary: LexisNexis told a US appeals court that headnote annotations have the full protections of U.S. copyright law, supporting Thomson Reuters’ win in a copyright case against Ross Intelligence over Westlaw headnotes. “Permitting uncompensated appropriation would distort competition by privileging copyists over creators and hollowing out the incentive structure that sustains rigorous editorial review, quality control, and continuous updates. It would also flood the market with uncurated AI outputs lacking accountability and provenance, increasing research errors and doctrinal drift—harms felt most acutely by courts, small practitioners, and pro se litigants,” LexisNexis argued.See attached file. ...

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