Xavier Nyssen

Xavier Nyssen is the immediate past Co-Chair of Dechert’s international dispute resolution practice. Since 1988, he has concentrated his practice in international arbitration and complex litigations, especially in the telecom, energy and pharmaceutical sectors.

He has acted as counsel in numerous arbitrations whether ad hoc or under the rules of the International Chamber of Commerce (ICC), the London Court for International Arbitration (LCIA) or the European Development Fund (FED). He is also well versed in proceedings for the enforcement and the annulment of arbitration awards and occasionally acts as arbitrator.

Mr. Nyssen also regularly advises foreign companies on procedures to collect evidence and to enforce foreign judgments and arbitration awards in France.

Before joining Dechert in 2005, he worked in New York and Brussels and was co-managing partner of the Paris office of an international law firm, where he was responsible for the Litigation department.

Mr. Nyssen has been consistently recognized by both Chambers Europe and Chambers Global for his "strong track record on arbitrations in the energy, pharmaceuticals and telecommunications sectors." He is listed in The Legal 500 France and Décideurs Stratégie Finance Droit. Sources described him as a client-oriented, technically gifted and creative practitioner who provides "very high-level advice on complex matters." In 2017, he was listed as a leading lawyer by The Who's Who Legal: France - Arbitration.

Contributed to

6

Challenging and appealing arbitral awards in France
Practice Note

This Practice Note sets out the grounds and procedure for challenges and appeals against arbitral awards in France. It discusses the legal framework for setting aside international and domestic arbitration awards and the consequences of an application for set aside. It includes relevant decisions from the French Supreme Court (Cour de Cassation) and from the Paris Court of Appeal (Cour d’Appel). The process begins with notification (service) of the award and the applicable regime is explained. It also covers appeals against domestic arbitral awards and the effects of such appeals. Other forms of recourse against both international and domestic awards are also discussed, including third party action and action to revise an award for fraud.

Challenging arbitral jurisdiction and anti-suit injunctions in France
Practice Note

This Practice Note sets out the procedure for challenging the jurisdiction of arbitral tribunals in French courts and the French perspective on anti-suit injunctions.

Enforcing arbitral awards in France
Practice Note

This Practice Note sets out the procedure for obtaining the recognition and enforcement of an international arbitration award through French courts.

Interim remedies granted by arbitral tribunals seated in France
Practice Note

This Practice Note sets out the interim remedies available to arbitral tribunals seated in France.

Interim remedies granted by French courts in support of arbitration
Practice Note

This Practice Note sets out the interim remedies available in French courts in support of arbitration.

State immunity and arbitration in France
Practice Note

This Practice Note considers two types of state immunity in France, immunity from jurisdiction and immunity from execution, and it discusses the evolving case law on waiver of immunity.

Practice areas

Qualifications

  • Brussels, Paris and New York

Membership

  • Advisory Board, Institute for Transnational Arbitration
  • Former Member of the Litigation Committee, International Bar Association
  • Belgian Center for Mediation and Arbitration (CEPANI)

Panel

  • Contributing Author

Education

  • Columbia Law School, LL.M.
  • University of Lige, M.A.

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