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Warner Bros. Discovery Sues Midjourney Over AI Copies of DC and Looney Tunes Characters

The filing positions the studios’ cases to test whether training on copyrighted works qualifies as fair use.

Overview

  • Warner Bros. Discovery filed its complaint in Los Angeles federal court alleging willful infringement and seeking Midjourney’s profits or up to $150,000 per infringed work, plus injunctive relief.
  • The lawsuit claims Midjourney trained on studio works and generates near-identical images and videos of characters such as Batman, Superman, Wonder Woman, Bugs Bunny and Scooby-Doo, sometimes from generic prompts.
  • Warner alleges Midjourney recently lifted prior safeguards that blocked infringing video outputs, promoting “fewer blocked jobs” for a paid service priced from $10 to $120 per month.
  • This action joins Disney and Universal’s June case, while Midjourney has argued in those proceedings that training on publicly available content is transformative fair use and that users must honor its terms.
  • Warner’s filing cites Midjourney’s scale at roughly 21 million users and about $300 million in 2024 revenue, with discovery expected to probe training datasets and guardrail decisions.