Judge grants Thomson Reuters partial summary judgment in case against Ross


In a Memorandum Opinion filed on February 11, 2025, Visiting Circuit Judge Stephanos Bibas (sitting by assignment) granted summary judgment on most of Thomson Reuters’s claims for direct copyright infringement, related defenses, and fair use against Ross Intelligence, a former competitor. The Judge also denied summary judgment to Ross Intelligence on fair use and Thomson Reuters’s copyright claims.

As Judge Bibas explained:

“Ross built its competing [AI] product using Bulk Memos, which in turn were built from Westlaw headnotes. When Thomson Reuters found out, it sued Ross for copyright infringement.”

Click here to read the Judge’s reasoning in detail.

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