John Trenor


John A. Trenor has a diverse international practice encompassing international arbitration and dispute resolution. He has represented companies, states, state-owned entities, international organizations, and individuals in a wide variety of disputes in the oil and gas, IT, telecommunications, financial services, pharmaceuticals, aviation, defense, and other industries. Mr. Trenor has advised clients regarding commercial, investor-state, and state-to-state arbitrations governed by civil law, common law, and international law, under a wide variety of arbitration rules and in seats around the world.

Gabrielle Nater-Bass


Gabrielle Nater-Bass is a partner at Homburger in Zurich. Her practice focuses on international commercial arbitration and litigation. She is an experienced party counsel and arbitrator and acted in numerous arbitration proceedings, institutional and ad hoc. She also represents clients in investment treaty arbitrations and complex commercial cross-border litigations.  

Gabrielle Nater-Bass co-heads the ICCA-ASIL Task Force on Damages in International Arbitration. She is listed on the panel of arbitrators of the ICC National Committee (Switzerland), the HKIAC and the SIAC. She currently serves as president of the Arbitration Court of SCAI and is also a board member of ASA.


Ronnie Barnes

Cornerstone Research

Juliet Blanch

Arbitration Chambers

Paul Cohen

4-5 Gray’s Inn Square

Swee Yen Koh


Melanie van Leeuwen

Derains & Gharavi

Alexis Maniatis

The Brattle Group

Christopher Moore

Cleary Gottlieb Steen & Hamilton


9.00: Welcome coffee and registration

9.30: Chairs' opening remarks 

Gabrielle Nater-Bass, Homburger
John Trenor, WilmerHale

9.45: Session one: High tech solutions: Approaches on new technologies to help quantification of damages

New technology is revolutionising the legal world, with the world of arbitration quickly following suit. When it comes to damages, surely new technologies could also provide invaluable aid?

With a focus on which new technologies and tools could help and how, the panel will discuss questions such as:

  • How can new technology assist in ensuring that fewer mistakes are made with regard to damage issues?
  • What tools are available in the market right now to help with the legal, procedural and numerical hurdles concerning damages issues? What tools would you like to see developed that could be useful for such issues?
  • What could future advancements in technology bring to the future of damages?
  • To what extent can interactive spreadsheets or similar tools prepared by the parties and experts be used to assist arbitrators?
  • How could augmented reality and simulations assist in dealing with damage issues (including for example, determining compensable heads of damages, quantification of damages, interest issues etc.)?

Gabrielle Nater-Bass, Homburger
John Trenor, WilmerHale

Paul Cohen, 4-5 Gray's Inn Square
Swee Yen Koh, WongPartnership
Alexis Maniatis, The Brattle Group

11.00: Coffee break 

11.30: Session two: The GAR Live Question Time – What is still going wrong when it comes to quantifying damages?

Arbitrators are not mathematicians – but should they be? The assessment and quantification of damages continue to be thorny issues when it comes to international arbitration and, despite the paramount importance of damages, concerns still arise.  What still goes wrong and how can these issues be rectified? Moreover, can they be rectified solely by arbitrators, or is expert assistance required?

Our esteemed panel will discuss questions submitted by the audience and moderator in advance. For example:

  • What happens when even senior arbitrators can’t do the math?
  • What can we learn from the ICCA-ASIL Task Force on Damages on how to improve the process?
  • What choices made early lead to better or worse outcomes in damages assessment and quantification?
  • Do we need an industry-standard checklist to work from at the very beginning?
  • How can arbitrators best navigate both the procedural and legal issues surrounding damages?
  • How can we make the arbitrators more comfortable with tackling damages?

Gabrielle Nater-Bass, Homburger
John Trenor, WilmerHale

Juliet Blanch, Arbitration Chambers
Ronnie Barnes, Cornerstone Research
Melanie van Leeuwen, Derains & Gharavi
Christopher Moore, Cleary Gottlieb Steen & Hamilton

12.45: Chairs’ closing remarks

Gabrielle Nater-Bass, Homburger
John Trenor, WilmerHale

13.00: Networking lunch

14.00: Close of conference


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2 London Wall Place, London, EC2Y 5AU, United Kingdom

Ticket Prices

Private Practitioner
Type Price Until
Super Early £650 3 Aug 2018
Early £750 31 Aug 2018
Standard £850 13 Sep 2018


Complimentary In-house/Governmental registration available