March 13, 2026
An artificial-intelligence-based legal search engine appealing a finding that its use of Thomson Reuters' Westlaw headnotes did not constitute fair use has pointed to arguments in a separate case it says supports the idea that AI training is connected to national security.
January 02, 2026
U.S. federal courts this year will continue to review consequential copyright infringement suits involving artificial intelligence, while appeals court decisions remain pending in a pair of notable fair use cases involving ROSS Intelligence and Microsoft. Here are Law360's picks for copyright cases to watch in 2026.
November 20, 2025
Thomson Reuters wants the Third Circuit to back a district court's decision that an artificial intelligence-powered legal search engine's use of Westlaw headnotes did not constitute fair use, saying the AI company "pilfered" copyrightable content to make a competing business.
September 30, 2025
A tech startup appealing an adverse fair use ruling to the Third Circuit has received nearly a dozen briefs in support of its position that it did not infringe copyrighted material from Thomson Reuters' Westlaw platform to create a competing legal research tool driven by artificial intelligence.
September 23, 2025
An artificial intelligence-powered legal search engine has asked the Third Circuit to reverse a district court's decision that its use of Westlaw headnotes did not constitute fair use, arguing its utilization of them "radically promoted scientific progress" and increased access to justice.