Cleary Gottlieb Steen & Hamilton (Brussels)

Antoine Winckler

Cleary Gottlieb Steen & Hamilton (Brussels)

Antoine Winckler is a partner with Cleary Gottlieb Steen & Hamilton based in their Brussels office. Mr. Winckler’s practice focuses on European and French competition law, including cartel investigations, merger control, and market dominance. Mr. Winckler has advised clients in numerous cartel cases, including those relating to cement, copper tubes, seamless steel tubes, paper and elevators. He also has been counsel to clients in merger control procedures, including the Nestlé/Perrier, EADS, Elf/TotalFina, Schneider/Legrand, Arcelor-Mittal and Danone Numico cases. Mr. Winckler has extensive experience representing corporate clients and financial institutions, as well as governments and public entities, regarding EC State aid rules. In this area, Mr. Winckler has advised on the Ford/Volkswagen, Credit Lyonnais and France Telecom cases, as well as other State aid matters. Mr. Winckler has vast experience representing clients before the European Commission, the European Courts in Luxembourg, the French Competition Council and the Court of Appeals in Paris. His litigation experience includes many major competition and State aid cases such as Matra v. Commission, Microsoft v. Commission, Schneider v. Commission. Mr. Winckler is distinguished as a leading competition/antitrust lawyer by Chambers & Partners Global - The World’s Leading Lawyers, Who’s Who Legal and the PLC Which Lawyer? Yearbook. Mr. Winckler joined the firm in 1985 and became a partner in 1992. Prior to joining the Cleary Gottlieb, Mr. Winckler was an administrative judge. He received law degrees from the Université de Nice Sophia Antipolis in 1984 and from the Institut d’Études Politiques de Paris in 1979. Mr. Winckler graduated from the Ecole Nationale d’Administration in 1983 and the French Ecole Normale Supérieure in 1976. Mr. Winckler is a member of the Bars of Paris and Brussels. He is admitted to practice before the EC Court of Justice, the EC Court of First Instance and the Court of Appeals in Paris. He is also a member of the International Bar Association, the Association des Juristes Européens, the Association de Formation et d’Enseignement Continu (AFEC), and the European Competition Lawyers Forum. His native language is French, and he is fluent in English, German, Italian and Spanish. Mr. Winckler is widely published on various aspects of EC constitutional and competition law, including “Collective Dominance under EC Merger Control Rules,” published in the Common Law Market Review; “Legal Privilege and EC Competition Rules,” published in the Belgian journal Bruylant; and “State Guarantees for Financial Institutions: of State Aid and Moral Hazard,” published by the Institut Universitaire Européen. In addition, he is co-author of a treatise on merger control rules, which includes a comparative study of main merger control regimes in EC countries (“La Pratique Communataire du Contrôle des concentrations” De Boeck-Wesmael, 1998). Mr. Winckler is also the Editor for the section on Merger Control in the journal Revue Lamy de la Concurrence.


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Cleary Gottlieb Steen & Hamilton (Brussels)
Cleary Gottlieb Steen & Hamilton (Cologne)
Cleary Gottlieb Steen & Hamilton (London)
Cleary Gottlieb Steen & Hamilton (Brussels)
Cleary Gottlieb Steen & Hamilton (Rome)


Antoine Winckler (Cleary Gottlieb)
Antoine Winckler 11 June 2018 Paris


2107 Bulletin

Antoine Winckler, Robbert Snelders, Timothy Noelanders The EU Commission adopts Merger Simplification Package which is designed to streamline its procedure under the EU Merger Regulation


The European Commission Simplifies Its Merger Control Review Process* On April 20, 2023, the Commission adopted the 2023 Merger Simplification Package (the “2023 Package”) designed to streamline its procedure under the EU Merger Regulation. In particular, the 2023 Package (1) expands the (...)

Antoine Winckler, François-Charles Laprévote, Frédéric de Bure, Séverine Schrameck The French Competition Authority applies the "failing firm" defence for the first time (Mobilux / Conforama)


On April 28, 2022, the French Competition Authority (“FCA”) unconditionally cleared the acquisition of home furnishing retailer Conforama by Mobilux, the parent company of competitor But Group. The FCA applied the failing firm defense for the first time. Background On July 8, 2019, Mobilux (...)

Antoine Winckler, Andris Rimsa, Wanjie Lin, Edward Dean The EU General Court upholds the Commission’s decision to fine a multinational telecommunications company €124.5M for gun jumping (Altice / PT Portugal)


On September 22, 2021, the General Court upheld the European Commission’s decision to fine Altice Europe NV, a multinational telecommunications company, for prematurely implementing its acquisition of PT Portugal. Altice had engaged in conduct that contributed to the change in control of PT (...)

Antoine Winckler, Daniela Weerasinghe The EU Commission unconditionally clears a fuel-cell joint venture aiming to achieve climate-neutral and sustainable transportation (Volvo / Daimler)


Volvo Group (“Volvo”) and Daimler Truck AG (“Daimler”), notified a joint venture (“JV”) in the relatively novel but rapidly evolving hydrogen fuel-cell sector to the European Commission (“EC”, the “Commission”) . The JV cellcentric GmbH & Co. KG, based in Germany, will be active in the (...)

38150 Review

Antoine Winckler In Memoriam: John Temple Lang (1936–2022)


This foreword is an In Memoriam for Mr. John Temple Lang. Dr John Temple Lang, an internationally renowned competition lawyer, a pioneer of European law, and a passionate ornithologist and environmentalist, died suddenly in his 86th year. The Dublin-born lawyer worked for the European (...)

Frederic Jenny, Damien Neven, Jacques Buhart, David Henry, Thomas Funke, Mathew Heim, Catarina Midões, Nicholas Levy, David Little, Henry Mostyn, Ioannis Lianos, Massimo Motta, Martin Peitz, Cristoforo Osti, Almos Papp, Christian Wik, Kristian Hugmark, Julia Vahvaselkä, Antoine Winckler, Thierry Boillot Which competition and industrial policies for the new EU Commission after Siemens/Alstom?


This series of articles presents different points of view about the priorities of the newly established Commission on competition policy in Europe in the aftermath of the decision prohibiting the Siemens/Alstom merger and of the manifesto published by French and German governments. These (...)

Antoine Winckler, Bo Vesterdorf, Douglas Miller, John M. Connor, Laurence Idot, Wouter Wils Sanctions: Is more always better? (New Frontiers of Antitrust Conference - Paris, 15th February 2010 - Panel III)


Sanctions: Is more always better? Introduction Laurence IDOT Professeur à l’Université Paris II-Panthéon Assas Présidente du comité scientifique de Concurrences 1. Après les enquêtes et le rôle de l’économie comportementale dans l’appréciation des comportements, voici venu le temps des (...)



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