Ethics and regulation

Ethics in international arbitration

This Practice Note considers the various ethical standards that may apply in an arbitration and the impact of those differing standards on various stages of the arbitration such as witness preparation, disclosure and communications between the parties and the arbitrators. The note also covers the arbitrator’s role in ethical decisions and the impact of the IBA Guidelines on Party Representation in International Arbitration. See Practice Note: Ethical standards in international arbitration—an introduction.

Core procedural standards in arbitration

This Practice Note covers core procedural standards that govern international arbitration. It includes a discussion of the law of the seat, applicable institutional rules and other relevant standards such as professional obligations. See Practice Note: .

Conflicts of interest in arbitration—applicable principles

This Practice Note discusses general principles and guidance applicable to arbitrators and parties when assessing and dealing with conflicts of interest in arbitration. It considers: what the general principle of fairness and impartiality is, how an arbitrator’s independence is assessed, the guidance available for assessing and dealing with potential conflicts of interest. This Practice Note was written in partnership

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Switzerland - Revision of an arbitral award influenced by forgeries and fraud (A.________ v B.________, 4A_268/2025)

Arbitration analysis: In a judgment dated 22 October 2025 (4A_268/2025), the Swiss Federal Tribunal granted an application for revision of an international arbitral award rendered by the Court of Arbitration for Sport (CAS 2018/O/5735), holding that the award had been influenced, to the detriment of the player, by criminal offences committed by his former agent. The criminal courts had established that the agent had submitted forged contracts and a fabricated email in order to mislead the sole arbitrator and obtain payment of an undue commission. Relying on Article 190a(1)(b) of the Swiss Private International Law Act (PILA), the Federal Tribunal set aside the award and remitted the case to the CAS. The decision is exceptional in Swiss arbitration practice, where successful revisions of arbitral awards based on criminal conduct remain extremely rare. It underscores the decisive evidentiary role played by criminal proceedings—particularly where criminal authorities, unlike arbitral tribunals, can rely on coercive powers and international mutual legal assistance to uncover fraud. More broadly, the judgment confirms that Swiss law provides an effective mechanism to ensure that arbitration cannot be instrumentalized as a vehicle for criminal misconduct. Written by Pierre Ducret, CMS Switzerland, counsel to the player before the Swiss Federal Tribunal, and in all related proceedings.

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