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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 rulingSeptember 29, 2026Thomson Reuters v. ROSS Intelligence · 3d Cir. No. 25-2153

Third Circuit holds ROSS's AI training on Westlaw headnotes was not fair use, and sets generative AI apart

The Third Circuit affirmed summary judgment for Thomson Reuters. It held that the 2,243 headnotes at issue are original, and that ROSS's copying to train a legal-research AI was not fair use: the use served the same purpose as Westlaw and was minimally transformative at best, and it harmed a developing market for licensing headnotes as AI training data. A footnote distinguishes generative AI, noting that unlike the models in Bartz v. Anthropic and the OpenAI litigation, ROSS's tool cannot generate original expression. Not a pirate-library case.

Opinion (Sept. 29, 2026) ↗ChatGPT Is Eating the World ↗Copyright Lately ↗

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What the labels mean

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.