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Anthropic argues Claude's copyright use is transformative fair use in CA court

Published
Score
17

Why it matters

Anthropic has asked a California federal judge to rule that its use of copyrighted materials to train Claude qualifies as transformative fair use, comparing the AI's training process to how humans learn by reading and absorbing themes. The filing stands apart from the $1.5 billion class-action settlement in Bartz v. Anthropic, where the claims deadline passed on March 30, 2026, and a fairness hearing is scheduled for May 14, 2026, in San Francisco federal court.

The settlement covers claims from over 100,000 authors and rights holders, with an April 15 status report indicating 91 percent participation. Judge Martinez-Olguin, newly assigned to the case, is considered unlikely to grant certain requests. The underlying dispute centers on allegations that Anthropic used unauthorized pirated datasets to train its models. The company faces multiple copyright suits beyond Bartz, with some revealing that publishers failed to properly register works before they were ingested into training datasets.

Attorneys should monitor the May 14 fairness hearing closely. The case will test how courts apply fair use doctrine to large-scale AI training—a question with implications far beyond Anthropic. The settlement's approval could establish precedent for damages in AI copyright disputes and shape how companies approach training data acquisition going forward. Recent discoveries that major publishers like Macmillan have contractual issues with authors over AI training rights suggest the litigation landscape remains unsettled even as this settlement moves toward approval.

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