Managing Partner of Paris Office

Jean-Philippe Lambert

Mergers & Acquisitions, Banking & Finance, Litigation & Dispute Resolution


Listed and non-listed companies, investment funds, and major French and global groups rely on Jean-Philippe Lambert for advice on structuring, negotiating, and implementing M&A and financing transactions. 

In addition, French and foreign groups trust Jean-Philippe with complex litigations before French courts, and he  advises on restructurings and collective proceedings dispute resolution.

In 2001, Lambert & Lee, the firm Jean-Philippe had founded, merged with Mayer Brown. 

In addition to his native French, Jean-Philippe is fluent in English and Spanish.




  • Veolia on its litigation against Suez following the acquisition of 29.9% shares of Suez from Engie and the OPA launched on the remaining share capital in February 2021 and the corporate aspects of this acquisition.
  • The CEO of a French insurance company on a high-stakes litigation involving reputational risks.
  • La Française des Jeux on several of its strategic acquisitions, including ZEturf.
  • Elis in the context of its €1.9 billion debt restructuring.
  • The Ludendo group with respect to its €230 million debt restructuring.


  • “Highly regarded” in Banking, M&A and Private Equity in France – IFLR 1000
  • A key contact” – Chambers Global
  • “Has a wealth of expertise in the practice area, from acquisition finance to debt refinancing” – Chambers Global
  • “A real estate finance specialist, with additional experience in local and international acquisition finance matters. A client says: ‘I really appreciate him professionally because he’s direct, he’s serious and he knows his cases perfectly.’” – Chambers Global
  • “A strong litigator” – Chambers Global/Chambers Europe
  • “Strong in real estate finance, and clients benefit from his expertise in environment regulatory law.” – Chambers Global


  • Université Paris V René Descartes, Diplôme d'Etudes Supérieures Spécialisées
  • Université Paris II Panthéon-Assas, Maîtrise


  • Paris


  • フランス語
  • 英語
  • スペイン語