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Apart from offering expert legal consultancy for local jurisdictions, CMS Francis Lefebvre partners up with you to effectively navigate the complexities of global business and legal environments.

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Jean-Fabrice Brun
Partner

Jean-Fabrice Brun

Languages
  • French
  • English
Social media

Jean-Fabrice Brun joined CMS Francis Lefebvre in 2004 and became a partner in 2016. He is joint manager of the firm's Dispute Resolution department. 

He advises a broad range of corporate, individual, government, and public clients. He is an experienced litigator and represents clients in high-stakes litigation proceedings before the national civil, commercial, financial, and criminal courts. 

Jean-Fabrice Brun is highly skilled in international arbitration. He has represented several international groups in strategic litigation proceedings in the agri-foods, banking, insurance, and aviation sectors.

Publications

  • Expert Guide to Mandatory Reporting of Criminal offences, contribution pour la France à un CMS Expert Guide, 26 novembre 2025, co-written with Olivier Kuhn, Cécile Rebiffé and Stivian Kostadinov
  • Usage des données fournies lors d’un audit pré-acquisition : un risque pénal d’abus de confiance et d’escroquerie ?, Option Finance, 8 octobre 2025, co-written with Stivian Kostadinov
  • Polices fiscales et respect de la vie privée, Revue européenne et internationale de droit fiscal, n° 2025/2, Septembre 2025, co-written with Stivian Kostadinov
  • Commentaire de l’arrêt Crim., 29 avril 2025 (effets de la fusion sur le champ de l’appel pénal), numéro 24-81.555, Option Finance, 20 juin 2025, co-written with Stivian Kostadinov
  • Indirect conflict of interest leads to set aside of an ICC award in USD 15bn dispute: the Paris Court of Appeal’s “Opportunity Fund” judgment of 2 May 2024, International Disputes Digest, 16 décembre 2024, co-written with Stivian Kostadinov
  • Annulation d’une perquisition fiscale : des agents de l’Administration irrégulièrement habilités, Option Finance, 25 septembre 2024, co-written with Stivian Kostadinov
  • Perquisitions fiscales : européanisation et réflexes à adopter lors des opérations, Option Finance, 1er septembre 2023, co-written with Stivian Kostadinov and Chloé Adelbrecht-Vignes

Memberships & Roles

  • Member of the Board of the Hauts-de-Seine Bar Association (2020-2022)

Education

  • MBA - ESSEC (2004) 
  • DESS (Diplôme d’études approfondies) in business law, DJCE (post-graduate degree in corporate law) Université Paris II - Panthéon-Assas (2001) 
  • Graduate, Institut de droit des affaires (IDA), Université Paris II - Panthéon-Assas (2000) 
  • Master’s degree in business law, Université Paris II - Panthéon-Assas (2000) 
  • Licence in law, Université Paris II - Panthéon-Assas (1999)
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