Open navigation
Search
Offices – France
Explore all Offices
Global Reach

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.

Explore our reach
About CMS – France
How can we help you ?

If you're not looking for legal advice, or you're not sure who to contact, fill in the form below and one of our teams will get back to you.

Contact us
Search
Expertise
Insights

CMS lawyers can provide future-facing advice for your business across a variety of specialisms and industries, worldwide.

Explore topics
Offices
Global Reach

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.

Explore our reach
CMS France
Insights
About CMS
How can we help you ?

If you're not looking for legal advice, or you're not sure who to contact, fill in the form below and one of our teams will get back to you.

Contact us

Select your region

Grégory Dumont
Partner

Grégory Dumont

Languages
  • French
  • English
Social media

Grégory Dumont joined CMS Francis Lefebvre in 2007 and became a partner in 2021. 

He practices in private client law. He advises clients on the transfer of their business assets within family groups, contingency planning for the consequences of a divorce or inheritance for clients’ assets, and the civil law aspects of international property and personal issues in the context of growing mobility. 

Grégory Dumont works mainly with senior company executives and high-net-worth individuals. He assists clients in litigation procedures (contested divorce and inheritance cases) and with asset planning taxation. He’s practice areas are the law on gifts, marriage regimes, inheritance law, joint possession law, division of property, life insurance, international private law, incapacity law, and capital transfer tax (on donations and inheritance).

Publications

  • Crypto-actifs : anticiper pour sécuriser leur transmission successorale Le Revenu 06/2025 Délai quinquennal de prescription pour l'action en réduction et l'action en délivrance de legs, Gazette du Palais (March 2025) 
  • Qu’est-ce qu’un pacs en indivision ?, Le Monde (March 2025) 
  • Publication du Bofip sur la non-déduction de certaines dettes de quasi-usufruit, Feuillet Rapide (2024) 
  • Précisions sur le délai de prescription de l’action en réduction, Gazette du Palais (July 2024) 
  • Industrie d’un époux et participations aux acquêts, Gazette du Palais (March 2024) 
  • La location équipée et le régime « Dutreil », Gazette du Palais (December 2023) 
  • Transmission d’entreprise : nécessité de prouver l’animation avant la transmission, Les Echos (29/08/2023)
  • Pas de délai de paiement des droits de succession pour l’héritier réservataire Gazette du Palais (August 2023) 
  • Modalités de taxation des révélations non spontanées de dons manuels, Gazette du Palais (April 2023)
  • Assurance-vie, mariage et succession, Les Echos (18/01/2023) 
  • Régime Dutreil : infirmation de la condition de maintien de l’activité après la transmission, Feuillet Rapide 2022 n°29 
  • Changement de bénéficiaire de contrat d'assurance-vie et testament, Gazette du Palais (August 2022) 

Memberships & Roles

  • Member of the French Institute of Tax Lawyers (IACF) 
  • Lecturer for the Master 2 in Business Law and Taxation – Paris Sorbonne (2019–2025) 
  • Lecturer at the EFB (since 2018) 
  • Lecturer for the Executive Master in Professional Wealth and Private Management – Paris Dauphine (since 2020) 
  • Lecturer for the Master 2 in Professional Wealth Law – Paris Dauphine (2008–2020) 
  • Former Secrétaire de la conférence (elected appointment to provide on-call criminal defence as a result of a debating competition held by the Hauts-de-Seine Bar) (2009)

Lectures list

  • Co-hosting the annual Francis Lefebvre Formation Conference: Current Tax Developments in Wealth 
  • Co-hosting EFE training sessions on Dutreil Agreements

Education

  • Magistère de juriste d'affaires/DESS (Diplôme d’études supérieures spécialisées), Université Paris II - Panthéon-Assas (1989) 
  • DESS (Diplôme d’études supérieures spécialisées) in notarial law, Université Paris II - Panthéon-Assas (2005) 
  • Magistère Juriste d’affaires, Université Paris II - Panthéon-Assas (2004) 
  • DJCE (post-graduate degree in company law) - Certificate in tax law (2004) 
  • Specialisation in personal, family and property/inheritance law; specific qualification: property/inheritance law, tax law and customs law; specific qualification: estate planning taxation

Further reading

  • Contrat d’assurance-vie : pas de forme imposée pour le changement de bénéficiaires

Back to top