A U.S. federal judge ruled in favor of Thomson Reuters, finding that Ross Intelligence's use of Westlaw's copyrighted headnotes to train its AI legal research tool constituted copyright infringement. The ruling suggests significant implications for over 39 pending copyright-related lawsuits against AI companies. Judge Stephanos Bibas rejected Ross' argument of transformative use, stating that their platform merely repackaged Westlaw's services, failing to add new meaning. This decision highlights the challenges AI firms face in navigating copyright laws, especially when competing against established players in the legal tech field.
In his summary judgment, the judge determined that Ross' use of Westlaw headnotes was not transformative, undermining the startup's claims of legal defensibility.
The judge's ruling suggests strong implications for other ongoing copyright-related AI lawsuits, as the case sets a precedent regarding the use of copyrighted materials.
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