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Silke Heinz

Ms. Heinz’s practice focuses on European and German competition law. She advises clients in relation to

  • merger notifications

  • horizontal cooperation and distribution, including joint ventures

  • cartel cases, including leniency applications and settlements, and vertical infringements

  • dominance

  • compliance, internal investigations and training

  • litigation, including on damages claims


She has expertise in various industries, including aerospace, automotive, broadcasting and media, including digital media, chemical products, consumer goods, energy, IT, medical devices, pharmaceutical products and telecommunications.

She also has experience in other EU regulatory matters, including privacy rules.

Ms. Heinz has been involved in a broad range of merger control proceedings with the European Commission and with the Federal Cartel Office in Germany, including second-phase proceedings, the negotiation of undertakings as well as referral cases to and from the European Commission. She recently represented clients in the GlaxoSmithKline/Novartis and Baxter Healthcare/Gambro merger cases. She is also experienced in worldwide multi-country merger filings.

Ms. Heinz has represented clients in litigation, notably with the Düsseldorf Court of Appeals, the German Federal State Court and the European Courts. For example, she represented Axel Springer in the litigation against the FCO’s merger prohibition of the acquisition of ProSieben/Sat.1. She was also involved in the preliminary ruling proceedings in the Pfleiderer case concerning access to file in cartel cases, and other civil litigation and arbitration cases involving antitrust claims, including defending Disney against claims of cinema operators.

Ms. Heinz further has in-depth experience with cartel proceedings with the European Commission and national authorities, including the coordination of multi-authority proceedings. She has carried out internal investigations, has assisted in dawn raids, submitted leniency applications and negotiated settlements with competition authorities. Ms. Heinz advised clients in EU cartel proceedings for example in the areas of bathroom fittings and fixtures (including subsequent appeal proceedings with the European Courts) detergents, the automotive sector, and in Germany for example in the decorative paper, consumer goods and beer cartel proceedings. She has also advised on damage claims.

In addition, Ms. Heinz is active in compliance, including establishing compliance concepts and providing
antitrust trainings.

The leading publication on German law firms, JUVE, lists Ms. Heinz among the category of “leading names in antitrust law”. German magazine Wirtschaftswoche has listed Ms. Heinz among the top antitrust lawyers (2011) and compliance lawyers (2019) in Germany. She is recognized as an expert for competition law in Who’s Who Legal 2017. She was among the winners of the Global Competition Review Antitrust Awards 2015 (matter of the year) as part of the team that represented GlaxoSmithKline in the GlaxoSmithKline/Novartis merger. She is named in the prestigious Global Competition Review’s list of “Women in Antitrust 2016” among the top 100 female private practitioners in the field.

Ms. Heinz received an LL.M. degree from the College of Europe in Bruges in 1997. She passed her second state law examination in the State of Hamburg in 2000 and the first state law examination at the University of Hamburg in 1996.  Ms. Heinz is a member of the Bar in Cologne. Her native language is German, and she is fluent in English and French. Prior to founding Heinz & Zagrosek, Ms. Heinz worked for Cleary Gottlieb Steen & Hamilton LLP, a leading American law firm, for more than 15 years, four of which she spent in Brussels.

Ms. Heinz is a member of the legal bar in Cologne.  She is a native German speaker and fluent in English and French.
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