November 04, 2026
A California federal judge on Wednesday tossed music publishers' claims against artificial intelligence behemoth Anthropic and its CEO Dario Amodei alleging they ripped off lyrics from over 20,000 songs, but said the publishers can amend their complaint and try again.
October 30, 2026
A California federal judge overseeing music publishers' high-stakes copyright fight with Anthropic over song lyrics expressed frustration during a hearing Friday, calling the fair use debate "slippery" and citing an "overarching concern" that she can't get clear answers about the categories of AI outputs at issue.
October 21, 2026
A California federal judge Wednesday appeared open to Anthropic's defense that using copyrighted song lyrics to train Claude AI is fair use, saying during a daylong hearing that "mash-up" lyrics produced by AI might constitute fair use while also questioning how to "slice and dice" the case's scope.
April 29, 2026
Five technology industry groups have urged a California federal judge overseeing a suit accusing Anthropic of infringing copyrighted music to train the artificial intelligence model Claude to find that such activity falls under the umbrella of fair use.
April 21, 2026
Anthropic PBC has asked a California federal judge to find that its use of copyrighted materials to train its tool Claude is "transformative" fair use under copyright law, comparing Claude's learning to how humans learn from reading and internalizing the themes of various works.
March 24, 2026
Music publishers have asked a California federal judge to rule that Anthropic infringed their copyrighted song lyrics through its Claude large language model, arguing in a motion for partial summary judgment that fair use does not excuse the AI developer's conduct because it used those lyrics to build a competing commercial product.
January 28, 2026
Major music publishers already suing Anthropic for copyright infringement filed a second, $3 billion suit against the artificial intelligence company on Wednesday, a move they say is necessary to hold Anthropic accountable for "brazen," newly discovered mass infringement of sheet music and songbooks.
December 16, 2025
Anthropic urged a California federal judge during a hearing Tuesday to order music publishers to produce the prompts and outputs their investigators used to test whether the Claude AI chatbot was infringing song lyrics, while the publishers slammed Anthropic's request as an overbroad third attempt to pierce work-product protections.
October 06, 2025
Music publishers accusing Anthropic of using their songs' lyrics to train its artificial intelligence chatbot can pursue previously dismissed copyright claims, after a California federal judge said Monday that their updated complaint plausibly alleges that Anthropic knew people were using its AI system to create song lyrics.
August 07, 2025
A California federal judge on Thursday denied a request from music publishers for the names of people who used Anthropic PBC's generative text tool Claude to get copyrighted lyrics, saying she was not persuaded that production of personal third-party user information was needed for the infringement litigation.