Thomson Reuters wins AI copyright ruling over training data
Briefly

Thomson Reuters secured a partial summary judgment in a copyright case against Ross Intelligence, disallowing fair use as a defense for unauthorized training on proprietary data. The decision emphasizes that Westlaw's editorial content is protected under copyright law. Following this ruling, Ross Intelligence, which shut down in 2020 and attempted an antitrust counterclaim, hasn't provided comments. The ruling is significant as it marks a critical precedent in copyright cases involving AI, especially in distinguishing training input from inference output.
We are pleased that the court granted summary judgment in our favor and concluded that Westlaw's editorial content created and maintained by our attorney editors, is protected by copyright and cannot be used without our consent.
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