Two major music copyright giants—Sony Music and Warner Chappell—have formally filed suit against AI company Anthropic, accusing it of “massive, flagrant misappropriation of intellectual property,” marking the most explosive case yet in the AI training data copyright battle.
Potential damages may reach several billion dollars
According to the complaint filed on August 30 in the U.S. District Court for the Northern District of California, Sony Music and Warner Chappell allege that Anthropic used “tens of thousands” of copyrighted musical works without authorization to train its Claude series of AI models. Plaintiffs seek maximum statutory damages per infringing work $150,000and an additional $25,000 for each willful removal of copyright management information $25,000If the court awards maximum statutory damages, total compensation could reach several billion dollars.
Specific infringing songs listed in the complaint include Marvin Gaye’s “Ain’t No Mountain High Enough,” Bon Jovi’s “Livin’ On a Prayer,” Earth, Wind & Fire’s “September,” Leonard Cohen’s “Hallelujah,” and Taylor Swift’s “Paper Rings,” among other classics.
Accusations target founders directly: over 5 million pirated books downloaded
Unlike previous cases that sued only corporate entities, this lawsuit unusually names Anthropic co-founders Dario Amodei and Benjamin Mann as individual defendants. The complaint alleges Mann downloaded over 5 million pirated books via BitTorrentwhile company employees additionally downloaded at least 2 million more from the “Pirate Library Mirror.” Furthermore, the complaint accuses Anthropic of web-scraping content from lyrics sites such as MusixMatch and LyricFind—sites that themselves pay record labels for licensed content.
Plaintiffs state outright in the complaint: “This is one of the largest and most brazen ongoing thefts in intellectual property history.”
Anthropic’s legal troubles continue to escalate
This marks yet another major lawsuit Anthropic has faced recently. Earlier, the company settled with the publishing industry for $1.5 billion Multiple music rights holders—including Universal Music Group, Concord, ABKCO, BMG, and Round Hill Music—have also separately filed lawsuits against Anthropic.
For Anthropic, this creates a “pincer movement”: on one front, it confronts government blacklisting controversies (having just won a court ruling on August 28 declaring the Pentagon’s blacklist unconstitutional), while on the other, it faces dual copyright offensives from both the publishing and music industries.
What this means for the AI industry
The significance of this case extends far beyond Anthropic alone. Music rights holders’ decision to “strike hard” at this moment—by directly suing founders and specific employees and detailing evidence of pirated downloads—signals a comprehensive escalation in copyright holders’ litigation strategy against AI companies. It shifts from abstract legal debates over whether training data constitutes fair use to precise, targeted actions focused on “who specifically, by what means, and which data were obtained.”
If the court ultimately rules in favor of the plaintiffs, Anthropic will not only face substantial damages but the entire AI industry’s approach to training data acquisition will be reexamined. For companies relying on large-scale web scraping to train models, this could be a turning point.
📌 Follow the latest AI industry developments at AI Dash — Discover the best AI tools.