Thomson Reuters Secures Landmark AI Copyright Victory Against Ross Intelligence

In a landmark decision, U.S. District Judge Stephanos Bibas ruled in favour of Thomson Reuters, holding that Ross Intelligence infringed Westlaw's copyrighted content to develop a competing AI-driven legal research platform. 

The ruling rejected Ross' fair use defence, emphasising that its actions created a market substitute for Westlaw.

This decision sets a precedent in AI copyright disputes, complicating fair use arguments for tech giants like OpenAI and Google. 

Ross, which had shut down in 2021 due to litigation costs, marks the first casualty in the growing legal battle over AI's use of copyrighted material.