# NYT, Ziff Davis lose bid to revive copyright claims against Microsoft

Published: 2026-08-08T01:03:13.155Z · Source: Chat GPT Is Eating the World (https://chatgptiseatingtheworld.com/2026/08/07/judge-stein-denies-news-plaintiffs-leave-to-add-new-contributory-infringement-claim-v-microsoft-news-plaintiffs-ziff-davis-already-abandoned-contributory-infringement-claim-foreclosed-by-cox-commun/)
Source date: 2026-08-07
Entities: openai, ai-litigation

A federal judge overseeing the consolidated In re OpenAI Copyright Infringement Litigation denied the New York Times, Daily News, and Ziff Davis leave to add new contributory-infringement theories against Microsoft, per Chat GPT Is Eating the World. Judge Stein dismissed the plaintiffs' existing material-contribution contributory-infringement and trademark-dilution claims with prejudice, after they had voluntarily abandoned that theory once the Supreme Court's Cox Communications v. Sony Music Entertainment ruling foreclosed it; Ziff Davis's claims tied to newer OpenAI models were dismissed without prejudice.

Why it matters: The ruling narrows one of publishers' legal theories against Microsoft in the sprawling OpenAI copyright MDL, showing how the Supreme Court's Cox Communications decision is foreclosing contributory-infringement claims across AI-training lawsuits.

Canonical: https://anythingengineoptimization.com/item/2026-08-08-nyt-ziff-davis-lose-bid-to-revive-copyright-claims-against-microsoft/
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