Jurisdiction(s):
European Union

Opera v Commission at the EU General Court: Admissibility and individual concern in third‑party challenges to DMA non‑designation of Microsoft Edge

Published on: 29 October 2025

Published by an LexisNexis EU Law expert

Legal News

Article summary

A legal challenge brought by Norwegian web browser Opera against the European Commission centres on the regulator’s decision not to subject Microsoft’s Edge browser to the highest tier of obligations provided for by the EU’s law to curb the power of digital gatekeepers. The arguments were heard at the EU General Court this week, where Opera, the commission and Microsoft traded blows over whether Edge ought to have been labelled a 'core platform service' under the Digital Markets Act (DMA) (see here). Yet the eventual judgment, when it arrives, is also expected to illuminate another crucial point for the future of platform regulation: under what circumstances can third parties contest the commission’s DMA designation decisions? That question, which consumed a sizeable portion of the hearing, could prove pivotal for the future of DMA enforcement, given the law grants no formal standing to third parties even though the commission relies heavily on them in its proceedings.

(In)admissibility

In fact, the point surfaced right at the outset of the hearing, as the commission’s first line of defence was an objection of inadmissibility: it argued Opera had 'not shown that the decision concerns it individually'...

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