Martina Maier

Siemens (Brussels)
Chief Counsel Competition

Martina Maier is Chief Counsel Competition at Siemens (Brussels). Prior to that, she was General Counsel at Unilever and previously, a partner in the international law firm of McDermott Will & Emery, based in the Brussels office. She headed the firm’s European Antitrust and Competition Practice Group. Ms Maier’s practice focuses on German and European competition law, including State aid, single firm conduct, merger control and agreements restricting competition. She has extensive experience in representing clients before the European Commission, national competition authorities and European courts. Martina is recommended by numerous publications and legal directories such as, Chambers Global, Chambers Europe, the JUVE Handbook of German Commercial Law Firms, the International Who’s Who of Business Lawyers and European Legal Experts. She is also featured in Global Competition Review’s Leading Women in Antitrust and Euromoney’s Guide to the World’s Leading Women in Business Law.


Linked authors

Jones Day (Brussels)
McDermott Will & Emery (Paris)
McDermott Will & Emery (Brussels)
Paris School of Economics
University of East Anglia (Norwich)
DG COMP (Brussels)
Oxera (Oxford)


1778 Bulletin

Martina Maier, Philipp Werner The EU Court of Justice confirms prior State aid cannot be taken into account by public authority to justify further subsidies as market behaviour (Land Burgenland)


In its recent judgment in Land Burgenland (Joined Cases C-214/12 P, C-215/12 P and C-223/12 P) the Court of Justice of the European Union (CJEU) has confirmed that compatible State aid granted to an undertaking in the past must not be taken into account in the context of the Market Economy (...)

David Henry, Martina Maier, Philipp Werner The EU Court of Justice clarifies the scope of the law in relation to pricing practices of vertically integrated companies in the telecommunications sector (TeliaSonera)


This article is the winner for the business category, economics section of the 2012 Antitrust Writing Awards. Click here to learn more about the Antitrust Writing Awards. Introduction On 17 February 2011, the European Court of Justice (ECJ) – on a reference for a preliminary ruling by the (...)

7071 Review

Martina Maier, Philipp Werner The Reform of German Antitrust Law


The reform of the German competition law brings major changes to the Act against restraints of Competition (Gesetz gegen Wettbewerbsbeschränkungen, GWB). In the field of cartels it is brought in line with European competition law. However, the German rules on abuse of a dominant position remain (...)


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