In TrendsStock MarketStocks To WatchGold and SilverNSE RebalancingITRUS appeals court backs Thomson Reuters in landmark AI copyright dispute with RossThe ruling marks a significant development in the growing legal battle over copyrighted material used to train artificial intelligence systems. Ross Intelligence had argued that using Thomson Reuters’ Westlaw headnotes to develop its legal search engine qualified as fair use. The case differs from many current AI copyright disputes because Ross’ system was designed for legal search rather than generative AI.By Reuters September 29, 2026, 11:27:39 PM IST (Published)A US appeals court on Tuesday upheld a ruling for information services company Thomson Reuters in its copyright dispute with former legal-research rival Ross Intelligence over Ross’ alleged misuse of copyrighted material to train an AI-powered legal search engine.The Philadelphia-based 3rd US Circuit Court of Appeals rejected Ross’ argument that its search engine made fair use of material from Thomson Reuters’ Westlaw platform, a first-of-its-kind ruling by a U.S. appeals court in a wave of high-stakes copyright cases over AI training.The appeals court’s reasoning for its decision is currently sealed.Thomson Reuters is the parent company of Reuters News.Thomson Reuters’ 2020 lawsuit accused legal research company Ross Intelligence of copying Westlaw’s “headnotes,” which summarize…
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