

Mayer Brown
Client SatisfactionMayer Brown is a strong choice to represent high-profile French and international clients in antitrust investigations, as well as in subsequent appeals and follow-on damages claims before the courts, with an impressive recent record in cartel cases. In particular, the firm stands out for its skill in assisting clients in dawn raids, a field where practice head Nathalie Jalabert-Doury is widely recognised for her expertise. The team is also well versed in merger control cases (and related FDI and FSR filings), state aid and distribution law. Jean-Maxime Blutel, who has a strong all-round competition practice, and Guillaume De Meersman are other notable team members.
Testimonials
Collated independently by Legal 500 research team.
‘A team that can adapt to its client's strategic challenges and find solutions.’
‘Jean-Maxime Blutel excels in this area and knows how to listen to the business needs of his clients.’
‘Their great strength lies in their very great mastery of the subject matter. Clear and precise invoicing, without any surprises. Very helpful mode of collaboration. Great listening skills. It has unfortunately become rare to meet lawyers who truly understand your problems and who offer concrete, pragmatic and effective solutions. I highly recommend this firm.’
‘Jean-Maxime Blutel is attentive, very precise, shows great mastery of his subject, and has excellent technical skills.’
‘Exceptional availability and great experience, which allows you to benefit from feedback from other situations. Very informative.’
‘Particularly noteworthy is the great negotiating ability, finesse of analysis and teaching skills of Nathalie Jalabert-Doury.’
‘Nathalie Jalabert Doury is truly in the cohort of leading competition practitioners in the jurisdiction – she has vast knowledge and is easy to approach. She stands out as a superb expert and team leader. I’d also highlight Jean-Maxime Blutel, Aymeric de Moncuit and Guillaume de Meersman – all great advisors, reliable, knowledgeable and highly committed.’
‘The team has very strong expertise in the field of competition law. It knows how to develop the best possible strategy for the company by having a rigorous but pragmatic approach.’
Key clients
- AGPM
- Cummins
- ENEDIS (EDF)
- Geopost/DPDgroup (La Poste group)
- Intermarché / Les Mousquetaires
- La Française des Jeux
- Mediawan
- Pernod Ricard
- Veolia Environnement
- Vinci Construction (Vinci)
Work highlights
- Defended Les Mousquetaires in front of the Court of Justice of the European Union and obtained the first full annulment of an EC inspection due to lack of sufficient grounds, which constitutes a fundamental guarantee of European Union law.
- Advising La Française des Jeux (FDJ) on all antitrust, merger control and foreign investments aspects of its EUR 2.6 billion tender offer to acquire the entire share capital of Kindred and create a European gaming champion.
- Secured a rare annulment of most of the French Competition Authority’s ham cartel decision for Intermarché before the Paris Court of Appeal.
Lawyers

Practice head
The lawyer(s) leading their teams.
Nathalie Jalabert-Doury