Derains & Gharavi International

Romain Dethomas



LANGUAGES: French, English, Spanish and Portuguese
ADMISSION: Paris and New York

Romain is a counsel at Derains & Gharavi specialised in international arbitration. He regularly acts as counsel in international arbitration proceedings and legal proceedings before French courts.

Romain has handled arbitrations conducted under the Arbitration Rules of the International Court of Arbitration of the International Chamber of Commerce (ICC), the International Centre for Settlement of Investment Disputes (ICSID), the Dubai International Arbitration Centre (DIAC), the Singapore International Arbitration Centre (SIAC) and the UNCITRAL Rules and governed by different legal systems such as French law, English law, Swiss law, Luxembourg law, Egyptian law, Gabonese law and Algerian law. Romain has also regularly represented clients in arbitration related litigations before French courts, including in actions aimed at obtaining annulment and enforcement of arbitral awards before French state courts, and acted as secretary of arbitral tribunals.

Romain’s arbitration practice focuses on commercial and Investor-State arbitrations involving the energy (oil and gas/electricity), automotive and aviation sectors, sales/services agreements, shareholders relationships, joint-ventures, M&A, construction projects and investment protection in general under international law.

Prior to joining Derains & Gharavi, Romain worked in the international arbitration and business litigation departments of a leading French law firm. He was also for over a year member of the executive committee of a French listed company.

Romain is admitted to the Paris and New York Bars. He obtained an LLM from Harvard Law School, a Master’s degree in international private and commercial law from Panthéon-Assas University and a Master’s degree in economic law from Sciences Po. He regularly teaches law at Sciences-Po Paris.


Since May 2024 Counsel, Derains & Gharavi (Paris)
Oct. 2022-Feb. 2024 Strategic Development Group Director – Member of the Executive Committee, Chargeurs SA (French listed company) (Paris)
Sept. 2014-Sept. 2022 Senior Associate – International Arbitration and Business Litigation, Bredin Prat SAS (Paris)



2014 LL.M – Harvard Law School (Arthur Sachs fellow), Cambridge, U.S.A.
2014 Professional Lawyer’s Certificate (Certificat d’Aptitude à la Profession d’Avocat), Paris
2011 Master’s Degree in International Private and Commercial law (Valedictorian), Panthéon-Assas University, Paris
2010 Master’s Degree in Economic law, specialization in Litigation and Arbitration, Sciences Po, Paris
2008 BA in Economics and political sciences, specialization in Latin American studies, Sciences Po, Paris


L’arrêt Alstom Transport du 28 mai 2019 : les singularités de l’ordre public matériel et de la corruption dans le contrôle de régularité de la sentence arbitrale internationale, co-author L-C. Delanoy, Cahiers de l’Arbitrage, 2020/2

Le sursis à exécution de la sentence arbitrale internationale : précisions sur la notion d'exécution « susceptible de léser gravement les droits de l'une des parties », Revue de l’Arbitrage, 2020/2

Réflexions sur le contrôle de la compétence du tribunal dans un arbitrage fondé sur un traité d’investissement, co-author T. Portwood, Cahiers de l’arbitrage, 2019/2

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