Authorities
Bartz v. Anthropic PBC
Bartz (N.D. Cal. 2025): training on lawfully acquired books was fair use.
Citation: Bartz v. Anthropic PBC (N.D. Cal. June 2025)
Type: Case
Jurisdiction: Federal
Issuing body: U.S. District Court for the Northern District of California
Status: Decided in part; resolved by a class settlement of about $1.5 billion, which has received final approval
Court: U.S. District Court for the Northern District of California
Parties: Bartz v. Anthropic PBC
Proceeding: court decision
In June 2025, the Northern District of California held that training on lawfully acquired books was fair use, but building a library of pirated copies was not. The case was resolved by a class settlement of about $1.5 billion, which has received final approval. The citing guide gives the court and month only, with no docket number.
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