ICC YAF: Witnesses in Arbitration Proceedings

29 Apr 2022

Zürich English
16.00 (CET)

ICC Young Arbitrators Forum (ICC YAF) is back in Zurich with an in-person event to spark a lively debate on the use of fact witnesses in arbitration.

In arbitration proceedings, fact witness testimony is often an essential form of evidence. Parties usually provide written witness statements in the context of their written submissions. The witnesses are then subjected to direct and cross-examination, as well as questions from the arbitral tribunal, during the evidentiary hearing.

During this conference, panellists from different backgrounds will share their experience dealing with fact witnesses in arbitration proceedings.

  • A first panel will address the pre-hearing phase and discuss, among other topics, how to select your witnesses, how to draft written statements and how to address any duties of confidentiality and loyalty to which a witness may be subject.
  • A second panel will address three essential topics at the hearing phase: how do you best prepare your witnesses for the hearing, how do you examine a witness, and what obstacles may arise during the examination?

Join us to share your own experiences, learn about best practices and receive practical tips. This conference is aimed at young arbitration practitioners – external counsel, experts, in-house counsel, academics and budding arbitrators – of approximately 40 years of age or under (although anyone interested in the topic is welcome to attend).

*CET Time Zone




Welcome Words

  • Cinzia Catelli, Partner, Bär & Karrer, Zurich
  • Andrea Roth, Wartmann Merker, Zurich
  • Benjamin Moss, ICC YAF Representative for Europe & Russia; Sidley Austin, Geneva


First Panel: Witnesses in the pre-trial phase

Moderator: Benjamin Gottlieb, Senior Associate, Schellenberg Wittmer, Zurich

  • Andrea Meier, Partner, Walder Wyss, Zurich
  • Stefanie Pfisterer, Partner, Homburger, Zurich
  • Shirin Saif, Partner, Roschier, Stockholm




Second Panel: Witnesses in the trial phase

Moderator: Cinzia Catelli, Partner, Bär & Karrer, Zurich

  • Stefano Fornara, Partner, Walder Wyss, Lugano
  • Sarah Ganz, Special Counsel, WilmerHale, London
  • Hanna Roos, Partner, Hanna Roos dispute resolution, London


Drinks on Rooftop

Cinzia Catelli

Partner, Bär & Karrer, Zurich

Stefano Fornara

Partner, Walder Wyss, Lugano

Sarah Ganz

Special Counsel, WilmerHale, London

Benjamin Gottlieb

Senior Associate, Schellenberg Wittmer, Zurich

Andrea Meier

Partner, Walder Wyss, Zurich

Stefanie Pfisterer

Partner, Homburger, Zurich

Andrea Roth

Wartmann Merker, Zurich

Hanna Roos

Partner, Hanna Roos dispute resolution, London

Shirin Saif

Partner, Roschier, Stockholm

Date and venue

29 April 2022

Venue: Bär & Karrer, Brandschenkestrasse 90, 8002 Zurich, Switzerland

Disclaimer When you click to register for the event above, you leave the ICC website and proceed to registration by email with the event co-organizer. Your personal information will be collected by the event co-organizer in accordance with its own privacy policy. Among other things, the privacy policy provides that the event co- organizer will share your personal data with ICC for the purpose of providing event services (videoconference access and password).

For further information, please contact:

Cinzia Catelli


Tel. +41 58 261 50 00

Andrea Roth

Senior Associate

Tel. +41 44 212 10 11