Antoine Laniez

Portrait of Antoine
Antoine Laniez is a partner with NautaDutilh and head of the Luxembourg Litigation & Arbitration practice. He represents a wide range of institutional clients in complex arbitration and litigation in the areas of commercial, corporate and insolvency law.
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Antoine has an impressive track record in cross-border recognition and enforcement proceedings, in particular cases involving sovereign states. He also supervises a dedicated employment team, which focuses on Luxembourg and European corporate labour law.

  • Work highlights
    • Representing two Moldovan investors in proceedings to enforce a more than USD 500 million arbitral award against a Central Asian country, resulting in a multimillion-euro asset freeze.
    • Representing a multinational bank in complex insolvency-related litigation in Luxembourg.
    • Representing a major insurance company in Cepani arbitration relating to a construction dispute.
    • Representing a subsidiary of GE Capital in complex litigation before the Luxembourg courts.
    • Representing one of the largest employers of Luxembourg in a sizeable commercial litigation against a former client. 
    • Representing a major oil company to defend against a bid by descendants of a former sultanate to enforce a USD 15-billion award.
    • Representing a Luxembourg based award creditor in one of the most notorious renewable energy investment case against Spain.
    • Appointed as an arbitrator in a complex dispute related to the sale of a large business (share deal) in one of the first arbitration proceedings governed by Luxembourg's new law on arbitration, dated 19 April 2023.
  • What others say
    • 'Antoine Laniez provides excellent advice' (Chambers Europe, 2023)
    • 'Antoine Laniez is all-round, an excellent technical lawyer and provides a terrific client service' (The Legal 500, 2022)
    • 'Leading arbitration practitioner' (The Legal 500 Arbitration Powerlist, 2022)
    • 'Future leader in arbitration' (Who's Who Legal, 2020, 2021, 2022)
    • Practice recognised as 'Excellent' for Litigation & Arbitration (Leaders League, 2023)
  • Ancillary functions

    Antoine was a lecturer at the law faculty of the University of Lorraine for several years and is now a guest lecturer on international arbitration at the University of Luxembourg. He is a member of the Comité Français de l'Arbitrage (CFA) and a board member of the Luxembourg Arbitration Association (LAA). He was part of the six member redacting committee which drafted the Luxembourg new arbitration law of 19 April 2023, in close cooperation with the Ministry of Justice of Luxembourg.

  • Qualifications

    Admission to the Bar

    Antoine was admitted to the Luxembourg Bar in 2006 and to the French Bar in 2013 (non-practicing). He qualified as a solicitor of the senior courts of England and Wales in 2011 (non-practicing).


    Antoine is fluent in French and English and proficient in Spanish.


    Antoine studied private and criminal law at the University of Toulouse and holds a master's degree in European law from the University of Bourgogne - Franche-Comté. During his studies, he took part in the Erasmus exchange programme in the Netherlands (2003). He also holds an LL.M. (DESS) in European litigation from the Universities of Nancy, Strasbourg and Luxembourg (2005). Antoine has over 15 years' experience as a lawyer in Luxembourg.

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