Associate - Attorney at law

Olivier Marquais

Olivier Marquais, associate, is a member of the Litigation & Risk Management Practice Group in our Luxembourg and Singapore offices. He focuses on international commercial law.

About Olivier Marquais 

Olivier specialises in (international) commercial law, contract drafting and negotiation, dispute resolution, Blockchain technology and smart contracts. He has experience in advising on a broad range of complex, high-value multi-jurisdictional technology and construction litigations and arbitrations. Prior to joining Loyens & Loeff in 2018, Olivier gained legal experience at the World Intellectual Property Organisation (WIPO) Arbitration and Mediation Centre for the Asia/Pacific region in Singapore. Olivier is also member of the Fintech Team.


  • New York Bar, 2015
  • Ontario Bar, 2014
  • Paris Bar, 2015
  • Quebec Bar, 2014
  • Luxembourg (List IV), 2019


  • Quebec Bar School, University of Ottawa (Canada), 2013
  • Bachelor of Common Law, J.D. (Cum laude), University of Ottawa (Canada), 2012
  • Bachelor of Civil Law, LL.L. (Summa cum laude), University of Ottawa (Canada), 2012
  • Master’s in Public International Law, LL.M. (With Distinction), University of Kent (Brussels, Belgium), 2008


  • French
  • English
  • Spanish

T: +352 466 230 242