Authors Guild and co-plaintiffs filed motions for summary judgment against OpenAI and Microsoft in consolidated MDL (1:25-md-03143, Judge Sidney Stein).
Plaintiffs argue OpenAI built business on “mass piracy” including LibGen books. Courts have held obtaining “for free” what one would “ordinarily have to buy” is not fair use. Opposition briefs due early October 2026; hearing expected early 2027.