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Mirjam van de Hel - Koedoot


Portrait of Mirjam
Mirjam van de Hel-Koedoot heads our Arbitration practice. She specialises in international arbitration and arbitration-related court proceedings. Mirjam has extensive experience acting as counsel in commercial and investment treaty arbitrations under a variety of arbitration rules including ICC, LCIA, UNCITRAL, ICSID and NAI rules.
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She also regularly acts in complex and high-value court proceedings concerning the setting aside and enforcement of arbitral awards, especially relating to disputes involving bilateral and multilateral investment treaties.

  • Work highlights

    Examples of Mirjam's work include representing and advising:

    • An oil & gas company in setting aside proceedings in relation to an UNCITRAL arbitral award rendered against the Republic of Ecuador in an investment arbitration
    • Ukrainian investors in three setting aside proceedings in relation to UNCITRAL arbitral awards rendered against the Russian Federation in investment arbitrations
    • A Dutch investor in Dutch anti-arbitration court proceedings relating to a pending investment arbitration against the Republic of Poland
    • A top holding in ICC arbitration proceedings and related summary proceedings in a shareholder dispute
    • A Dutch oil production company in an ICC arbitration against an Italian construction company relating to a dispute regarding the construction of a diesel plant
    • A Dutch investor in an investment arbitration against the Czech Republic under the Netherlands-Czech Republic BIT
    • Moldova-based investors in enforcement proceedings in relation to an SCC arbitral award rendered against Kazakhstan in an Energy Charter Treaty investment arbitration
    • A Canadian mining company in setting aside proceedings in relation to an UNCITRAL arbitral award rendered against the Republic of Ecuador in an investment arbitration
    • An Italian energy company against a Dutch gas provider in an ICC multi-billion gas price revision arbitration
    • A Dutch insurance company in its multi-billion euro investment arbitration claim against the Republic of Poland regarding its investment in PZU
  • What others say
    • "Mirjam van de Hel-Koedoot has an exceptional ability to argue issues of treaty interpretation in a clear, straightforward manner that connects well with Dutch judges."
      The Legal 500 2022
    • "Complete mastery of Dutch arbitration law"
      The Legal 500 2021
    • Mirjam is also recognised as one of the Future Leaders in the Netherlands by Who’s Who legal: Litigation and Global Arbitration Review and included in the Legal500 Arbitration Powerlist – Benelux region.
  • Ancillary functions

    Mirjam also regularly acts as arbitrator. Mirjam is Chair of the Executive Board of the European Federation for Investment Law and Arbitration (EFILA) and a board member of the Dutch Arbitration Association (DAA).

    She frequently teaches, presents and publishes on various aspects of (investment) arbitration and civil procedural law. She is, among other things, co-author of the standard textbook on Dutch civil procedural law as well as a contributor to the Guide to the NAI Arbitration Rules.

  • Qualifications

    Mirjam graduated from Leiden University in 2001 and was admitted to the Bar in the same year. She also studied at the Institut d'études politiques in Paris and the University of British Columbia in Vancouver. Before joining NautaDutilh in 2009, she practised law at a major Dutch law firm and at an international arbitration boutique law firm in Brussels.

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