Olivier regularly acts as counsel in international arbitration proceedings, either ad hoc or under various institutional rules. He also assists clients in court proceedings relating to setting aside, recognition and enforcement of international arbitral awards or foreign judgments (including in investment treaty cases and against Sovereigns).

Aside from his extensive arbitration practice, Olivier handles litigations (including white-collar crime defence) before Belgian courts in the real estate, construction, energy and media industries.

Olivier also sits as an arbitrator under the ICC or Cepani Rules.

His recent activities include the representation of:

  • Foreign investors in enforcement proceedings of investment-treaty awards (UNCITRAL and ICSID) against sovereign States
  • Two real estate developers in post-M&A Cepani arbitrations (seats in Brussels and Luxembourg)
  • A credit insurance company and a world leading energy company in ICC arbitration against an African employer (seat in Paris)
  • A Belgian leading infrastructures company acting as contractor in ICC arbitration against a Spanish employer (seat in Paris)
  • A publisher and media company in civil and criminal proceedings relating to a fraud on the art market
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Memberships

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Brussels Bar (Ordre Français des Avocats), 2010
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Cepani (the Belgian arbitration institution)
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Cepani 40 Steering Committee
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IAI (International Arbitration Institute)
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ASA (Swiss Arbitration Institution)
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Qualifications

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LL.M. University of Chicago (USA), 2010
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LL.M, EU law, College of Europe (Bruges, Belgium), 2009
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Master in Law, Université Catholique de Louvain (Belgium), 2008
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Bachelor in Law, Université Saint-Louis (Belgium), 2005
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Publications

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van der Haegen, O., Boularbah, H., Mallien, A. (2022). Challenging and Enforcing Arbitration Awards 2022, Global Arbitration Review, GAR Insight
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van der Haegen, O., Cuvelier, F. (2021). Les clauses d’arbitrage et de médiation : questions choisies. Modes amiables de règlement des conflits/Minnelijke geschillenoplossing. Journal des juges de paix, Die Keure La Charte (Dossier 32), 1-132
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van der Haegen, O., Cuvelier, F. (2021). Le point de départ du délai pour introduire une action en annulation contre une sentence arbitrale obtenue par fraude, Journal des Tribunaux, 2021/26, n° 6864, 509-512
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van der Haegen, O., Van den Bossche, M.-C. (2021). Part III / Chapter 16 : Procedural issues: annulment, recognition and enforcement of investment treaty awards (ICSID and non-ICSID). International Arbitration and EU Law, Edward Elgar Publishing Ltd., 360 – 390
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van der Haegen, O., Larue, C. (2021). Les articles 1679 et 1717, paragraphe 5, du Code judiciaire : l’obligation en droit de l’arbitrage de soulever une irrégularité en temps utile. Les MARCs. CJJB Conférence du jeune barreau de Bruxelles, Larcier

What others say

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He enters the rankings this year on the back of excellent feedback, with one source reporting that he is "a standout lawyer," while another stresses that "he has really impressed me."
Chambers & Partners Global (2022)
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Dispute Resolution - ranked 'Next Generation Partner'
Legal 500 EMEA (2021)
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Peers and clients say: "He is a knowledgeable specialist who is very active in the arbitration scene", "Olivier is a persuasive advocate"
Who’s Who Legal (2021)
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