Fair use rejected for a non-generative legal-AI training set

Thomson Reuters sued Ross Intelligence for using Westlaw headnotes to build a competing legal-research AI. In February 2025 a Delaware federal court held that use was not fair use, limiting its ruling to the non-generative AI involved.

2025 Verified in a source

Source

Thomson Reuters v. Ross Intelligence, No. 1:20-cv-00613 (D. Del., 11 Feb 2025), via Jenner & Block

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This is an educational research summary built from public information. Allegations in pending cases are unproven, and the insurance notes above are for discussion, not coverage advice. Whether any policy responds depends on its specific wording, exclusions, endorsements, the facts, and applicable law.

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