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ARTICLE · 25 SEPTEMBER 2025

Cooperation Between Competition Authorities In Digital Markets: A Continuing Trend

Mayer Brown
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How to tackle the competition law issues relating to digital players and markets remains a key priority area for regulators around the world and an area about which...

GlobalAntitrust/Competition Law
Aymeric De Moncuit
Aymeric De Moncuit
Rachel J. Lamorte
Rachel J. Lamorte
Daniel Vowden
Daniel Vowden
Sarah Wilks
Sarah Wilks
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How to tackle the competition law issues relating to digital players and markets remains a key priority area for regulators around the world and an area about which they are now more regularly coordinating. Here, we consider how recent updates on cross-border cooperation and perspectives should affect how businesses approach these issues.

Cooperation agreement: EU and Japan

In July 2025, the EU and Japan held their 30th EU-Japan Summit. The joint statement following the Summit committed that the EU and Japan "will cooperate to promote fair and contestable digital markets by holding regular exchanges regarding the EU's Digital Markets Act and Japan's Act on Promotion of Competition for Specified Smartphone Software," which regulate many of the same businesses and issues such as interoperability, self-preferencing and user choice in app stores. This commitment coincides with the first anniversary of the application of the EU Digital Market Act ("DMA") and the

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