Key holding or allegation
The court allowed significant training/model infringement theories to proceed at the pleading stage, accepting allegations as plausible without finding that model weights actually contain infringing copies or that training infringes.
Why it matters
Important U.S. pleading-stage comparator to German model-memorisation holdings.
Facts
Artists alleged use of their works to train Stable Diffusion and alleged legal significance of works represented within the model and outputs.
Issues before the court
Whether training/model-related infringement theories were sufficiently pleaded and whether protected works may be represented within the model in legally cognizable form.
What the court did not decide
No finding that Stable Diffusion actually contains copies of plaintiffs' works, no final infringement finding and no final fair-use determination.
Procedural timeline
U.S. District Court for the Northern District of California
Motion-to-dismiss ruling: Court allowed significant training/model infringement allegations involving Stable Diffusion to proceed as plausible at the pleading stage.