Romain Perrois is an associate in Latham & Watkins’ Brussels office and a member of the firm’s Global Antitrust & Competition Practice. He specializes in European and French competition law and has significant experience in merger control.

Mr. Perrois advises clients on EU, French, and international antitrust aspects of mergers, acquisitions, and joint ventures. He has been involved in several high-profile and complex merger control cases in transactions requiring international antitrust merger control approvals, both in Europe and around the world.

His practice covers a wide range of industries, including technology, e-commerce, fintech and financial services, chemicals, private equity, automotive, and manufacturing. Mr. Perrois has also gained experience in antitrust investigations before the European Commission and the French Competition Authority.

Prior to joining Latham, Mr. Perrois worked in the Brussels and Paris offices of other leading international law firms.

Mr. Perrois’ experience includes advising:

Merger Control

  • Orange in the creation of a 50/50 joint venture with MásMóvil
  • Agility Public Warehousing Co. on merger control and FDI aspects in relation to its £571 million acquisition of John Menzies
  • The Carlyle Group in obtaining global antitrust clearance for its acquisition of Theramex, one of the largest specialty pharma platforms dedicated to women and their health, from CVC
  • Red Hat, Inc. in its acquisition by IBM in an all-cash transaction valued at approximately US$34 billion*
  • Viagogo in its US$4.05 billion acquisition of StubHub from eBay*
  • DuPont in its US$45.4 billion merger of its Nutrition & Biosciences business with International Flavors and Fragrances Inc* 
  • Essilor in its €46 billion combination with Luxottica*
  • Konecranes, a Finnish engineering firm, in its €4.5 billion merger with Cargotec, a Finnish cargo handling machinery maker*
  • Gilead Sciences, Inc. in its US$5.1 billion transaction with Galapagos NV — named M&A Deal of the Year at the IFLR1000 Europe 2020 Awards*
  • WeWork Companies LLC in its US$4.4 billion investment from SoftBank Group and SoftBank Vision Fund* 

Antitrust Investigations and Litigation

  • Kuoni and Thomas Cook in relation to the EU Commission’s investigation of geo-blocking clauses*
  • A major sports league in ongoing abuse of dominance proceedings*
  • A multinational conglomerate leader in the healthcare industry in ongoing abuse of dominance proceedings*

*Matter handled prior to joining Latham

Bar Qualification

  • Avocat (Paris)
  • Brussels Bar - E List


  • Master in European Law and Litigation, Paris II Assas University (Paris - France), 2016
  • Master in Economic Law, Sciences Po Paris, 2015
  • Master in Economics, Durham University, 2012

Languages Spoken

  • English