Firm Profile > Peltier Juvigny Marpeau & Associés > Paris, France

Peltier Juvigny Marpeau & Associés
75002 PARIS

EU, competition and distribution Tier 1

Peltier Juvigny Marpeau & Associés is experienced in French and EU merger control cases, especially regarding multi-jurisdictional matters. The team is known for its work on high-profile antitrust litigation, such as contentious behavioural cases in many African countries, as well as state aid cases and private enforcement. Olivier de Juvigny frequently acts for numerous French and US companies in contentious issues. Thibault Reymond is particularly strong in antitrust litigation, distribution law, and merger control cases, while Ning-Ly Seng advises on merger control, state aid, and follow-on litigation.

Practice head(s):

Olivier de Juvigny; Thibault Reymond; Ning-Ly Seng

Other key lawyers:

Thibault Reymond; Thomas Bardusco; Agathe Sunderland


‘Ning-Ly Seng brings a lot of precision and depth to litigation.’

‘Very nice practice which works in full integration with the company. Great sense of business, commitment and unfailing responsiveness.’

‘Olivier de Juvigny is an exceptional lawyer, with in-depth expertise, a great knowledge of the business and very valuable negotiating skills.’

Key clients






BNP Paribas


Boehringer Ingelhiem


Searchlight Capital Partners



Caisse des dépôts


Dispute resolution: Stock market litigation Tier 2

Peltier Juvigny Marpeau & Associés regularly defends a leading financial accounting audit firm in AMF investigations. The practice is also retained by individuals and financial investors for AMF market abuse investigations. It is notably involved in several insider dealing investigations. Practice head Frédéric Peltier has extensive experience. Counsel Clément Wierre also provides key support.

Practice head(s):

Frédéric Peltier

Other key lawyers:

Clément Wierre

Key clients

Intermediate Capital Group (ICG)



Jekiti Mar Capital

Apax Partners

Dispute resolution: Commercial litigation Tier 3

Peltier Juvigny Marpeau & Associés‘ Frédéric Peltier is a strong name for corporate and shareholder conflicts litigation. He regularly acts for leading investment funds, such as Apax Partners whom he assists with several matters. The firm also represents companies. Nicolas Partouche, whose main expertise lies in restructuring and insolvency proceedings, also contributes, as does Clément Wierre who made counsel in 2020.

Practice head(s):

Frédéric Peltier

Key clients


MJA (Mandataires Judiciaires Associés)

Intermediate Capital Group (ICG)

Apax Partners

Concorde Finance



Insolvency Tier 3

Headed by Nicolas Partouche, Peltier Juvigny Marpeau & Associés‘ practice is managing an extensive restructuring and insolvency caseload. The core team regularly acts for debtors, mandataires judiciaires and judicial liquidators. It has recently been handling several key mandates involving SMEs and larger companies, mainly active in the retail and hospitality areas and which have been particularly affected by the Covid-19 outbreak. Finally, the team also handles related liability litigation and has been assisting several clients with the negotiations of state guaranteed loans (PGE).

Practice head(s):

Nicolas Partouche


‘Available and comprehensive.’

‘Excellent knowledge of the restructuring environment and key institutions.’

‘Nicolas Partouche and his team provide exceptional availability and responsiveness; they show great empathy.’

‘A complementary team with high level proficiency.’

Key clients



Courtepaille Group





Employment Tier 4

Peltier Juvigny Marpeau & Associés

Practice head(s):

Aurélie Fournier


‘Precise, available and efficient.’

‘Detailed analysis and great response time.’

‘Aurélie Fournier is excellent and a fine negotiator. François Troadec is also very good.’

Key clients


BNP Paribas




Mergers and acquisitions Tier 4

Practice head(s):


We appreciate the team’s availability, anticipation of problems and proposed solutions.’

High-level team, very responsive and technical.

The duo formed by Benoit Marpeau and François Dietrich is of very high technical quality, inspiring great confidence even in the face of larger teams from prestigious firms.

Key clients

Altarea Cogedim





Altran Technologies

Compagnie des Alpes


Bridgestone Europe

Apax Partners

The firm: Dethomas Peltier Juvigny & Associés is an independent law firm created in 2013 by Arthur Dethomas, Frédéric Peltier, Olivier de Juvigny and Thibault Reymond, experienced partners from the best French and international firms.

The firm is dedicated to M&A transactions and to the resolution of complex matters. We advise our clients in strategic matters, essentially related to M&A and joint-ventures, competition and merger control, governance, shareholders’ disputes, and equity financing.

In 2015, Benoit Marpeau joined Dethomas Peltier Juvigny & Associés to reinforce the M&A practice. End of 2016, Ning-Ly Seng, who started her career in 2004 at Bredin Prat and became Counsel in 2015, joined the firm to strengthen the Competition practice. She was elected to partnership in 2018.

Areas of practice: M&A/corporate finance: This practice is at the heart of our Corporate team¡¦s activities, including acquisitions or capital increases involving public or private companies, and private equity transactions. Our practice deals with all matters encountered by companies, whether they concern governance, disputes between shareholders or between companies and their managers. We advise issuers, shareholders and management on regulatory issues specific to listed companies, notably for the preparation of complex general shareholders meetings. Our practice also acts in matters before the French Financial Markets Authority (“Autorite des Marches Financiers”) or criminal courts.

Merger control and antitrust/competition: Competition law has become a cornerstone in the strategy of companies; our firm dedicates to merger control and antitrust/competition issues three partners who are involved on a regular basis in major or legally challenging cases. Our Antitrust/Competition partners have high-standard reputation in French and European merger control, they assist clients in antitrust/competition litigations before French and European competition authorities and jurisdictions. Our practice also includes private enforcement cases and restrictive and unfair competition practices.

Litigation and arbitration: Our lawyers defend their clients’ interests in strategic corporate disputes. Their expertise is well recognized in the practice of company law, shareholder and governance disputes, as well as in stock exchange, financial and anti-competitive behavior litigation.

White-collar criminal law and proceedings before regulatory authorities: With its combined understanding of criminal procedure and knowledge of the business and financial world, our firm provides counsel to clients in economic and financial criminal law matters, particularly in cases of violation of stock exchange and competition regulations. The lawyers of our firm have a highly regarded practice in defense before the French Financial Markets Authority and the French and European Competition Authorities.

Photo Name Position Profile
 Aurélie Fournier  photo Aurélie Fournier Partner
 Benoit Marpeau  photo Benoit Marpeau Partner
 Nicolas Partouche  photo Nicolas Partouche Partner
 Frédéric Peltier  photo Frédéric Peltier Partner
 Thibault Reymond  photo Thibault Reymond Partner
 Ning-Ly Seng  photo Ning-Ly Seng Partner
 Olivier de Juvigny  photo Olivier de Juvigny Partner

Under the responsibility of our co-head of the Antitrust Department, Ning-Ly Seng, the firm is involved in many diversity programs.

For instance, the firm partners with ViensVoirMonTaf and welcomes each year between 2 and 3 high school students from underprivileged neighbourhoods to carry out their compulsory discovery internship.

Ning-Ly is also part of several mentoring programs:

· Revel@Her promoting women from diverse backgrounds;

· the mentoring program of W@CompetitionFR with 16 other antitrust professionals (including the President of the French Competition Authority), mentoring youngest competition practitioners,

· Passeport Avenir, supporting during one full year a young student from underprivileged backgrounds by means of professional tutoring,

· HEC Incubator, supporting women entrepreneurs from diverse background to enter into HEC Incubator program (a tailored and participative start-up support program, now in partnership with Station F, one of the biggest European start-up campus).

The firm fiercely encourages the associates to participate and/or benefit from similar mentoring programs.