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Bartz et al v. Anthropic PBC

  1. June 24, 2025

    Anthropic Can Train AI On Books But Faces Trial On Pirating

    A California federal judge said artificial intelligence firm Anthropic can use books to train its LLM under the principle of fair use, but said the company would go to trial against a group of authors over the storage of millions of pirated books.

  2. May 22, 2025

    Training LLMs Is OK, Pirating Isn't: Anthropic Judge Tips Hand

    A California federal judge considering writers' copyright suit against Anthropic indicated Thursday that he thinks training its LLM with copyrighted works is fair use, but said plaintiffs can likely pursue claims that the AI startup infringed by obtaining those training materials from pirating websites instead of buying them.

  3. April 03, 2025

    Alsup Calls Out Anthropic Over Missed Discovery Deadlines

    U.S. District Judge William Alsup scolded Anthropic for again delaying discovery production in a proposed class action accusing the artificial intelligence startup of exploiting the copyrighted works of journalists and authors to train its large language model.

  4. March 28, 2025

    Anthropic Says Using Books For AI Is 'Quintessential' Fair Use

    Anthropic on Thursday moved to toss a group of journalists and authors' proposed class action accusing the artificial intelligence startup of exploiting their copyrighted work to train its large language model, Claude, telling a California federal court that its use of their works was transformative and thus "quintessential fair use."

  5. January 01, 2025

    California Cases To Watch In 2025

    Legal experts following Golden State courts in 2025 are tracking high-stakes antitrust and personal injury cases against Big Tech companies along with NFL subscribers' $4.7 billion antitrust appeal, as well as IP litigation against artificial intelligence developers and precedent-setting cases that will likely clarify environmental laws and the repercussions of unpaid arbitrateon fees.

  6. October 22, 2024

    Anthropic Says Fair Use Bars Authors' Copyright Class Action

    Anthropic PBC will mount a fair use defense against allegations from a proposed class of authors and journalists who sued the artificial intelligence company in August for allegedly ripping off their copyrighted work to train its large language model Claude.

  7. August 20, 2024

    Anthropic Hit With Another Copyright Suit Over LLM Training

    Anthropic PBC was hit with a proposed class action Monday in California federal court from a group of journalists and authors alleging the artificial intelligence giant is exploiting their copyrighted materials to train its large language model, Claude, without permission or a license, and has become enormously successful at their expense.