Anthropic Dodges Music Publishers’ Piracy Claim in AI Suit (1)

Oct. 8, 2025, 7:13 PM UTCUpdated: Oct. 8, 2025, 8:08 PM UTC

Anthropic PBC convinced a federal judge to deny music publishers’ bid to expand their copyright infringement lawsuit against the AI company to include a piracy claim.

Amendment is inappropriate because the publishers failed to diligently investigate the theory of liability based on Anthropic’s downloading of works, Judge Eumi K. Lee said Wednesday at a hearing in San Jose.

Publishers didn’t seek discovery into Anthropic’s use of the file-sharing tool BitTorrent earlier in the case, even though “the door had been open,” Lee said from the bench.

Publishers counsel, Nick Hailey of Oppenheim & Zebrak LLP, argued the late push to ...

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