Concord Music Group, Inc. v. Anthropic PBC
Eight music publishers say Anthropic copied the lyrics to 499 songs to train Claude and that Claude handed those lyrics back to users. Judge Lee heard the cross-motions for summary judgment on 21 October 2026. It is the first summary-judgment hearing on fair use in AI training before a district judge since Bartz and Kadrey were decided in June 2025. The court has not ruled.
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