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AI copyright news, graded by source

Court rulings, company filings and allegations about AI companies and pirated book collections. Checked for new filings about every hour; items are posted after review, so some appear later. Get these by e-mail · Court filings, free to read

Each item is graded by its source: a court’s ruling or order; a company’s own filing about itself; a defendant’s filing arguing its side; a plaintiffs’ filing; the claims in a complaint (allegation); or press reporting.

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Court orderOctober 6, 2026In re OpenAI, Inc. Copyright Infringement Litigation · S.D.N.Y. 1:25-md-03143

Judge strikes the authors' supplemental expert report and bars them from relying on a market-dilution study in the OpenAI case

In a one-paragraph order (Dkt. 2090), Judge Sidney H. Stein granted the motion by OpenAI and Microsoft to strike the supplemental report of the class plaintiffs' expert Michael Lasinski and to preclude the class plaintiffs from citing or relying on the paper "Generative AI Floods and Dilutes the Market for Books" by their expert Dr. Tuhin Chakrabarty. The order says the motion is granted "without opposition," citing the plaintiffs' Oct. 2 notice that they would no longer rely on the paper. The order applies to the Authors Guild and Alter class cases. It does not address the defendants' contention, which the plaintiffs and the paper's authors denied in sworn declarations, that plaintiffs' counsel funded the paper, and it does not rule on any other market-harm evidence.

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Every item says what kind of source it rests on. A court ruling or order is the court's own statement. A company filing is what a defendant says about itself. A government filing is a statement by a government agency that is not a party to the case, such as a statement of interest; it is the government's position, not a ruling. An allegation is what a complaint or motion claims and has not been decided. Reported means press reporting we have not confirmed from the primary document. Summaries are our own; follow the links for the source.

This page is general information, not legal advice. An allegation is not a finding. Whether any of this matters for a particular work or claim is a question for a lawyer.