1731/7/7/25 Alexander Wolfson v Microsoft Corporation; Microsoft Limited; Microsoft Ireland Operations Limited

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Application for a collective proceedings order arising out of an allegedly unlawful course of conduct by Microsoft that had the purpose or effect of limiting the number of pre-owned perpetual licenses for certain Microsoft products that became available for sale. The products in question are versions and editions of Windows, Office and client access licenses. 

The application is made on behalf of a proposed class of UK domiciled persons who purchased relevant licences in the UK during the period between 1 October 2015 and 12 May 2025. Relevant licences are defined in the claim form and include new Perpetual Licenses or subscription licenses, or pre-owed licenses for Microsoft products including versions of Microsoft Office and Windows. The application seeks to combine claims arising from what is said to constitute an abuse by Microsoft of its dominant position contrary to section 18 of the Competition Act 1998 and (prior to 1 January 2021) Article 102 of the Treaty on the Functioning of the European Union.

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