The Legal 500

Twitter Logo Youtube Circle Icon LinkedIn Icon

Jones Day

Serge Clerckx

Work +32 2 645 15 03
Jones Day

Work Department

Antitrust & Competition Law; Antitrust Civil Investigations & Litigation


Serge Clerckx, Partner, has extensive experience in EU competition law and government regulation, particularly in the IT, communications, and consumer goods sectors. His competition practice covers both merger control and antitrust. Examples of recent merger cases include P&G's acquisitions of Sara Lee's air care business and The Gillette Company, as well as the sale of its European tissue and towel business to SCA, and various acquisitions by British Telecom (BT). His antitrust practice includes complex investigations and private enforcement litigation, including a €500m damage claim for abuse of dominant position, as well as day-to-day counseling for global trade associations on antitrust compliance. Serge's government regulatory work involves representation of clients in IT, communications, and other regulated industries at the international, EU, and national levels. Most recent matters include the representation of the GSM Association before the European Court of Justice in Case C-58/08 on the legal basis of the regulation of international roaming prices. Other representative clients include General Motors, KPN Group Belgium, Tele2, Wavecrest, and The World Bank. Serge regularly speaks at conferences and frequently publishes on competition law and government regulation. He is a guest lecturer at Sciences Po, Paris.


Dutch, English, French, Spanish.


Admitted to the Brussels Bar.


Georgetown University (LL.M. 2002); University of Louvain (Master of economic law 1999); University of Leuven (J.D. 1998); Law Faculty of Namur (B.A. 1995).

Belgium: Competition

Belgian law

Within: Belgian law

Jones Day acted on a steady stream of merger reviews, abuse of dominance and cartel cases and state aid matters over the past year. Notable engagements included successfully acting for Mastercard to dismiss a damage claim brought by the Delhaize supermarket chain concerning interchange fees – Bernard Amory led that work. Serge Clerckx and practice head Alexandre Verheyden are also key contacts.

[back to top]

Back to index

Legal Developments by:
Jones Day

  • US rules regarding offshore accounts

    The Hiring Incentives to Restore Employment Act 2010, enacted on 18 March 2010, imposes a new US withholding tax and reporting regime, known as the Foreign Account Tax Compliance Act (FATCA). The FATCA regime applies generally to payments made after 31 December 2012, except on obligations (to be defined in future guidance) outstanding on 18 March 2012. Substantial effort is required by foreign entities to bring their worldwide operations and policies into compliance with the FATCA rules as of the effective date.

    - Jones Day

Legal Developments in Belgium

Legal Developments and updates from the leading lawyers in each jurisdiction. To contribute, send an email request to