Major book publishers Hachette Book Group and Cengage Group filed a motion Thursday to intervene in an existing class action lawsuit filed last year against Google, accusing the tech giant of orchestrating “historic copyright infringement” to build its Gemini platform.
The publishers claim Google downloaded books from pirate sites and then repeatedly copied them during the AI training process, first into computer memory, then into formats the AI systems could read, and again into training sets for each new model version.
Google's C4 training dataset contains copyrighted works scraped from Z-Library, a pirate collection from which authorities have seized more than 350 websites and web domains, the lawsuit alleges.
The publishers noted how books were copied from b-ok.org, a Z-Library domain now displaying a federal seizure notice, along with OceanofPDF and WeLib, "another prolific site with access to troves of unauthorized copyrighted content."
The C4 dataset contains works from at least 28 sites identified by the U.S. government as markets for piracy and counterfeits, the complaint notes.
"The copyright symbol (©) appears more than 200 million times in the C4 dataset," the complaint reads, noting Google allegedly excluded "policy notices" and "terms of use" warnings but included "vast categories of copyrighted works, pirated works, and works taken from behind paywalls."
The publishers allege that Google copied works from subscription-based libraries like Scribd.com, circumventing legitimate licensing agreements.
When confronted about this practice, nonprofit dataset provider Common Crawl allegedly responded with "a blame the victim mentality, proclaiming 'You shouldn't have put your content on the internet if you didn't want it to be on the internet.'"
The lawsuit alleges Gemini now produces outputs that "substitute for copyrighted works," including verbatim reproductions, detailed summaries, and "knockoffs that copy creative elements of original works."
Decrypt has reached out to Google and the publishers’ counsel.
AI and publishersThe publishers seek statutory damages, injunctions to halt further infringement, and an order requiring Google to destroy all unauthorized copies of their works and disclose which books were used to train Gemini.
