Michael Holzhäuser

Ashurst (Frankfurt)
Lawyer (Partner)

Michael Holzhäuser advises clients on all aspects of EU and German antitrust/competition law. As well as having strong compliance and multi-jurisdictional merger control experience, his practice also focuses on defending companies in international antitrust proceedings for cartels or abusive practices before the German and European cartel authorities and courts. In addition, he specialises in the defence of companies in private follow-on cartel damages claims. Michael’s practice also includes advising enterprises on their commercial agreements (e.g. distribution systems, R&D-license, JV- or specialisation agreements) as well as in regulatory and EU-law matters.. Prior to joining Ashurst he was a partner at DLA Piper Dr.. Holzhäuser has headed the German Antitrust and Competition Practice of Weil, Gotshal & Manges LLP and of Dewey & LeBoeuf LLP.


Linked authors

Winston & Strawn (London)
Ashurst (London)


1708 Bulletin

Michael Holzhäuser, Nick Elverston The Higher Regional Court of Düsseldorf suspends the decision of the German Competition Authority which prevented data gathering practices from a social network company (Facebook)


On 26 August 2019, the Higher Regional Court in Düsseldorf suspended the German Federal Cartel Office’s (’FCO’ or Bundeskartellamt) decision to prevent Facebook from combining user data from various sources such as Facebook, Instagram, WhatsApp and unrelated sites that use Facebook analytics and (...)

Michael Holzhäuser, Peter Crowther The EU Court of Justice issues preliminary ruling holding that national courts need to balance on a case-by-case basis the interest of preserving the effectiveness of leniency programmes and that of facilitating private enforcement by third parties (Pfleiderer)


This article has been nominated for the 2012 Antitrust Writing Awards. Click here to learn more about the Antitrust Writing Awards. On 14 June 2011, the European Court of Justice (ECJ) handed down a key judgment regarding the interplay between national leniency programmes and the right of (...)

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