Lawsuitsby GlyphMicrosoft lawsuits and enforcement actions
34 cases · 21 active
Times Publishing Co. sued v. 
Microsoft and OpenAITimes Publishing Company alleges Microsoft and OpenAI used its newspaper content without a license to train and run AI products.S.D. N.Y.
EU Commission: AWS and Azure DMA cloud investigationThe Commission told Amazon and Microsoft it preliminarily considers AWS and Azure should be designated as gatekeeper cloud services despite not meeting the DMA's quantitative thresholds.European CommissionRichner Communications sued v. MicrosoftThirty-five local and regional newspaper publishers representing about 400 outlets allege Microsoft and OpenAI copied their journalism to build AI products.S.D. N.Y.CMA: Microsoft business software SMS investigationThe CMA opened a strategic market status investigation into Microsoft's business software ecosystem under the DMCC Act.UK CMAFlowers sued v. MicrosoftAlleges Microsoft's Copilot and other voice products captured users' biometric voiceprints without BIPA consent.N.D. Ill.Snowflake ITM, Inc. sued v. Microsoft CorporationSued for patent infringement.E.D. Tex.Sarah Katz sued v. Microsoft CorporationSued for employment discrimination.C.D. Cal.California Newspapers Partnership sued v. MicrosoftA group of California newspapers alleges Microsoft and OpenAI used their articles without a license to train and run generative AI products.S.D. N.Y.Kincannon sued v. Microsoft CorporationA civil rights (jobs) case.W.D. Wash.Bryant sued v. Microsoft CorporationAn antitrust suit.N.D. Cal.EU Commission: Microsoft Teams commitmentsMicrosoft committed to sell its Office 365 and Microsoft 365 suites without Teams at a lower price and to improve interoperability for rival collaboration tools, ending the tying probe that began with a Slack complaint.European CommissionCMA: cloud services market investigationThe market investigation looked at egress fees, interoperability and Microsoft's software licensing practices in cloud computing.UK CMABird sued v. MicrosoftAuthors including Kai Bird allege Microsoft used nearly 200,000 pirated books to train its Megatron language model.S.D. N.Y.
In re OpenAI Copyright Infringement LitigationThe multidistrict litigation that gathers the author and news publisher copyright suits against OpenAI and Microsoft before one judge in New York.S.D. N.Y.CMA: Microsoft/OpenAI partnershipThe CMA concluded Microsoft had not acquired control over OpenAI's commercial policy, so the partnership fell outside UK merger rules.UK CMABundeskartellamt: Microsoft 19a designationThe designation covers Microsoft's ecosystem across Windows, Office, Azure and AI services such as Copilot.BundeskartellamtCMA: Microsoft/InflectionThe CMA treated Microsoft's hiring of Inflection AI's founders and staff as a merger but cleared it because it did not raise competition concerns.UK CMAMusk sued v. AltmanElon Musk sued OpenAI, Sam Altman and Microsoft over OpenAI moving away from its nonprofit founding promises. A mediator was appointed in July 2026.N.D. Cal.
Center for Investigative Reporting sued v. OpenAIThe nonprofit publisher of Mother Jones and Reveal alleges OpenAI and Microsoft used its journalism without permission to train and run ChatGPT and Copilot.S.D. N.Y.
Daily News sued v. MicrosoftEight Alden Global Capital newspapers, including the New York Daily News and Chicago Tribune, allege Microsoft and OpenAI copied millions of their articles to train and power chatbots.S.D. N.Y.
The Intercept sued v. OpenAIThe Intercept alleges OpenAI stripped author, title and copyright information from its articles when using them as training data, in violation of DMCA section 1202(b).S.D. N.Y.Basbanes sued v. MicrosoftJournalists Nicholas Basbanes and Nicholas Gage allege Microsoft and OpenAI used their books to train large language models without permission.S.D. N.Y.
New York Times sued v. Microsoft and OpenAIThe Times says millions of its articles were copied to train ChatGPT and Copilot, and that the models reproduce its journalism. Coordinated with the other news and author suits in the OpenAI copyright MDL.S.D. N.Y.Alter sued v. OpenAINonfiction authors led by Julian Sancton (later Jonathan Alter) allege OpenAI and Microsoft trained models on their books without a license.S.D. N.Y.CMA: Microsoft/Activision restructured deal clearedThe CMA accepted undertakings in lieu and cleared Microsoft's restructured acquisition of Activision Blizzard.UK CMA
Authors Guild sued v. OpenAIThe Authors Guild and 17 authors, including George R.R. Martin and John Grisham, allege OpenAI copied their books without permission to train GPT models; Microsoft was later added as a defendant.S.D. N.Y.
EU Commission: first DMA gatekeeper designationsThe first designation decisions under the Digital Markets Act gave six companies six months to comply with the DMA obligations for their core platform services.European CommissionFTC sued v. Microsoft (Activision)The FTC sought to halt Microsoft's USD 69 billion purchase of Activision Blizzard pending its administrative challenge, arguing it would harm rivals in consoles and cloud gaming.N.D. Cal.United States sued v. Microsoft (Xbox, COPPA)The FTC alleged Microsoft collected personal information from children who signed up for Xbox Live without notifying parents or getting consent, and kept it improperly.$20 millionW.D. Wash.EU Commission: Microsoft/Activision clearanceThe Commission approved the deal after Microsoft committed to let consumers stream Activision games they own through any cloud gaming service for ten years.European CommissionCMA: Microsoft/Activision blockedThe CMA's final report found the deal would harm competition in cloud gaming and prohibited it; Microsoft then restructured the transaction.UK CMAFTC: Microsoft/Activision administrative caseThe FTC's administrative complaint alleged Microsoft's acquisition of Activision would let it withhold or degrade games such as Call of Duty for rival consoles and services.FTCDoe sued v. 
GitHubDevelopers sued over Copilot suggesting their open source code without its license terms. The Ninth Circuit decided the certified appeal in September 2026.N.D. Cal.Sjunde AP-Fonden sued v. 
Activision BlizzardA Swedish pension fund alleges Activision's board mishandled approval of its $68.7 billion sale to Microsoft.Delaware Court of Chancery
EU Commission: AWS and Azure DMA cloud investigationThe Commission told Amazon and Microsoft it preliminarily considers AWS and Azure should be designated as gatekeeper cloud services despite not meeting the DMA's quantitative thresholds.European CommissionRichner Communications sued v. CMA: cloud services market investigationThe market investigation looked at egress fees, interoperability and Microsoft's software licensing practices in cloud computing.UK CMABird sued v.