Olivier Prost has been a partner at Gide's Brussels office since 2002. He is admitted to the Paris Bar (1993) and the Brussels Bar (1994). In 2008, he was appointed as a French foreign trade advisor (Europe section).

Olivier started the international trade law and WTO litigation practice at Gide. He advises companies and governments in the use of trade defense instruments (anti-dumping, anti-subsidy and safeguard measures). He is also very active in several areas which are becoming increasingly important to international trade due to the impact of globalization: market access and regulatory barriers, tax discrimination, health and environment, energy, trade secret and export control.

He intervenes also in the formulation, interpretation and implementation of EU laws in several industries regularly affected by trade laws, including in European and international litigation.

Olivier Prost is consistently ranked as a Leading Individual in International Trade, WTO and Antiduming by international legal guides Chambers Global and Legal 500. He has recently been inducted to The Legal 500 Hall of Fame. The Legal 500 Hall of Fame highlights individuals who have received constant praise by their clients for continued excellence. The criteria for entry is to have been recognised by Legal 500 as one of the elite leading lawyers for seven consecutive years.

« Olivier Prost heads the firm's international trade team and advises European industry associations or manufacturers on trade defence mandates. A client notes: "Olivier Prost is extremely experienced and brings very strong strategic thinking. He is also uniquely able to develop innovative and creative approaches and arguments." »
Chambers Europe 2022

« The firm, and especially Olivier Prost and Anna Dias, have shown exceptional knowledge of the sector, unique expertise and overall strong business acumen. The firm stands out in Brussels. »
Legal 500 EMEA 2021

« Olivier Prost and Anna Dias have shown consistent and outstanding legal and market knowledge, business acumen and unique understanding of the assignment specification. They are responsive and extremely reliable, and establish a strong bond and a climate of trust with their clients. »
Legal 500 EMEA 2021

« Olivier Prost and Anna Dias have great professionalism and relational skills; availability, correctness, speed. »
Legal 500 EMEA 2021

« Olivier Prost heads the firm's international trade team and advises European industry associations or manufacturers on trade defence mandates. He is praised for 'always trying to accompany the client in the project, but in a proactive and dialogic way.' Another client highlights his 'valuable inputs on strategy and policy.' »
Chambers Europe 2021

« Head of department Olivier Prost is seen by clients as a 'great expert who is to the point' and 'very pleasant to work with.' One source enthuses that he has 'outstanding technical capabilities.' He has a wealth of experience assisting European companies and trade associations with trade remedies and customs matters. »
Chambers Europe 2019

« Gide Loyrette Nouel's Olivier Prost heads a practice with notable strength in trade matters, sanctions issues, anti-dumping investigations and customs work, among other areas. Prost acted for the European Biodiesel Board in an anti-dumping investigation against biodiesel imports from Argentina. Other clients include Arkema, Eurofer and ArcelorMittal. Senior counsel John Lonergan and counsel Anna Claudia Coelho Dias are also noted. Pierre-Jacques Larrieu , who previously served as the head of unit at the European Commission's DG Taxation & Customs Union, is a recent hire. »
Legal 500 EMEA 2019