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Robert Patton provides advice and testimony in the areas of economics, finance, and valuation, in the context of litigation, international arbitration, and regulatory enforcement.


Mr. Patton has submitted expert evidence in English High Court and Ontario Superior Court. He has directed analyses of damages and has assisted in the preparation of expert reports for submission to English High Court, Canadian provincial courts, Irish Commercial Court, US federal and state courts, the Grand Court of the Cayman Islands, and international arbitration venues including ICC, SIAC, ICSID, PCA and tribunals convened under UNCITRAL rules.

In securities class actions and other collective actions by investors, Mr. Patton has examined issues relating to damages quantification, causation of loss, the price sensitivity of information, the share price impact of alleged accounting misstatements, market efficiency, class certification, and settlement prediction.

In commercial disputes, Mr. Patton has analysed loss of profit claims, damages arising from breach of contract, damages from minority shareholder oppression, consequential damages, and the appropriate rate of pre-judgement interest.

Mr. Patton has also assessed damages from expropriation and from breaches of Fair and Equitable Treatment, as well as other issues arising in investment treaty disputes. In financial services disputes and enforcement, Mr. Patton has analysed damages and causation in disputes involving hedge funds and other collective investment vehicles, and has carried out economic analyses relating to alleged mis-selling and market abuse.

Mr. Patton is a Chartered Financial Analyst (CFA) charterholder. He has been described by Who's Who Legal as possessing “a depth of knowledge and breadth of experience that is impressive for his age” and as “shockingly well prepared, a great writer and a hell of a witness on the stand”. Mr. Patton is recognized as a leading arbitration expert (2019-2024) by Who's Who Legal.  


  • MSc in economics and economic history, London School of Economics
  • BA in economics and BA in history, University of Michigan


  • Chartered Financial Analyst (CFA)


In Who’s Who Legal: Arbitration Expert Witness 2024, Mr. Patton’s clients recognized:


  • He “understands what is important to lawyers and the legal audience;”
  • “He is able to break down the most complex damages calculations into a digestible format;”
  • He has a “rigorous approach to quantum analysis;” and
  • “He is balanced, objective and professional in his approach.”