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Jonas Koponen

Antitrust & Foreign Investment Partner, Brussels

“Over the past twenty years I have advised clients from around the world on all areas of competition law. Clients value my ability to combine strategic intelligence with high quality legal advice as well as my deep commercial understanding and flexibility.”


Professional experience

Education and qualifications


Jonas is a highly regarded international competition lawyer, based in Brussels.  His experience spans from complex transactional to contentious competition law cases in Europe and beyond.


Jonas represents clients from around the world on merger review of M&A transactions. He has advised parties to numerous complex transactions, several of which were reviewed in “Phase II” by the European Commission and other authorities worldwide. In addition, he represents companies in investigations of business conduct, such as abuse of dominance, anti-competitive agreements and practices, and cartel matters (also involving applications for immunity and leniency) and related litigation.


His experience spans many industry sectors, with recent experience particularly in the  financial services, healthcare, telecommunications, software and information technology sectors.   

Work highlights

Highlights of Jonas’ transactional experience include advising:

  • Takeda Pharmaceutical Company in relation to its £46bn recommended offer for Shire plc, the largest ever outbound M&A deal by a Japanese company
  • Scripps Networks Interactive in relation to its acquisition (US$ 14.6 billion) by Discovery Communications
  • Johnson & Johnson on several acquisitions, including Abbott Medical Optics (US$ 4.3 billion), Synthes (US$ 21.3 billion), Pfizer Consumer Healthcare (US$ 16.6 billion), and Guidant (US$ 21.1 billion)
  • NKT Cables on its acquisition (€ 836 million) of ABB’s high voltage cables and accessories business
  • Trelleborg on its acquisition (US$ 1.35 billion) of CGS Holding, a company active in the field of agriculture, industrial and speciality tires
  • EQT and Investor in relation to their sale (US$ 4 billion) to Baxter International of Gambro, a globally leading manufacturer of dialysis devices
  • Microsoft Corporation on several transactions, including its public tender offer (€ 1.4 billion) for enterprise software provider Navision A/S, its proposed ContentGuard digital rights management JV with Time Warner, and its acquisition of the Yahoo! Search Business
  • Deutsche Börse on its proposed merger (€ 19 billion) with Euronext NV in the cash listing and trading and derivatives trading sectors
  • Swedbank on its proposed merger (US$ 6.19 billion) with SEB, the first financial services deal reviewed by the European Commission in Phase II
  • Telia on its proposed merger with Telenor, the first merger of European telecoms incumbents reviewed by the European Commission in Phase II

Highlights of Jonas’ experience in conduct investigations include advising:

  • An automotive parts company as immunity applicant in the European Commission's  investigations concerning Alternators & Starters, Thermal products, and Spark plugs, forming part of what has been called the “largest cartel investigation in history”
  • Microsoft in relation to the European Commission’s investigation into alleged abuses of dominance by Google in relation to Internet search and search advertising
  • an investment bank in relation to the European Commission's Power Cables investigation and subsequent appeal to the European Courts in relation to alleged parent company liability
  • a global investment bank on its successful defence against the European Commission's antitrust case concerning Credit Default Swaps
  • clients in relation to the European Commission’s investigations into Hydrogen Peroxide, Sodium Chlorate, Aluminium Fluoride, Feed Phosphates and Oil and ethanol benchmarks


Professional experience

Between 2015 and 2019, Jonas served as Global Head of Linklaters’ Global Competition Practice. Between 2011 and 2016, he was Co-head of the firm's Global Healthcare team.

Jonas is since 2007 a long-standing Non-Governmental Advisor with respect to the International Competition Network (ICN), currently advising the European Commission, and previously also the U.S. Department of Justice and the U.S. Federal Trade Commission. In recent years, he advised the ICN for instance on merger notification on procedures and remedies in the review of cross-border M&A. 

He was an early member of International Bar Association’s task forces regarding India and China and contributed to China’s State Administration for Industry and Commerce’s (SAIC) rules on IPRs and China’s anti-monopoly law. 

Jonas has published extensively on topics of international antitrust law (for instance, as author of the European Union chapter in European Competition Laws, published by LexisNexis) and is frequently invited to speak on the topic at international conferences. He lectures in competition law at the Brussels School of Competition.


Education and qualifications

Jonas was awarded a master of laws (LL.M.) by Lund University, Sweden (1995), and a Master of Comparative and European law (LL.M.) by Maastricht University, the Netherlands (1996).


He is fluent in English and Swedish.