CMA: Microsoft/OpenAI partnership antitrust case

Competition and Markets Authority · decided Mar 5, 2025 · Closed

The CMA concluded Microsoft had not acquired control over OpenAI's commercial policy, so the partnership fell outside UK merger rules.

The case

Against: Microsoft, OpenAI
Regulator: Competition and Markets Authority
Decided: Mar 5, 2025
Status: Closed
Outcome: The CMA found Microsoft's partnership with OpenAI did not qualify for merger investigation.

1 dated entry

Date	Entry	Type	Source
Mar 5, 2025	Decision: CMA: Microsoft/OpenAI partnership	Decision	Link

When	Case	Kind	Status	Filed
Sep 25Telephone Conference Todaynext date	United States v. Visa (debit)Telephone ConferenceActiveAntitrustS.D. N.Y.	Antitrust	Active	Sep 24, 2024
Oct 2Joint proposed final judgment due in 7dnext date	United States v. Google (ad tech)Joint proposed final judgment dueDecidedAntitrustE.D. Va.	Antitrust	Decided	Jan 24, 2023
Nov 5Motion to Dismiss Hearing in 41dnext date	A.C. v. Altman (Tumbler Ridge)Motion to Dismiss HearingActiveConsumer protectionN.D. Cal.	Consumer protection	Active	Sep 2
Nov 5Initial Case Management Conference in 41dnext date	Ted Entertainment v. OpenAIInitial Case Management ConferenceActiveCopyrightN.D. Cal.	Copyright	Active	Apr 3
Sep 16Filed 9d agofiled	Times Publishing Co. v. Microsoft and OpenAIActiveCopyrightS.D. N.Y.	Copyright	Active	Sep 16
Aug 14Filed 42d agofiled	Sullivan v. OpenAIActiveCopyrightS.D. N.Y.	Copyright	Active	Aug 14
Jul 23Filed 64d agofiled	EU Commission: Google DMA finesDecidedAntitrustEuropean CommissionEUR 890 million	Antitrust	Decided	Jul 23
Jul 9Filed 78d agofiled	EU Commission: SAP ERP support commitmentsClosedAntitrustEuropean Commission	Antitrust	Closed	Jul 9

Caption and links

Microsoft / OpenAI partnership merger inquiry