Firm Profile > Winston & Strawn LLP > Paris, France

Winston & Strawn LLP
75008 PARIS

Dispute resolution: Commercial litigation Tier 2

Winston & Strawn LLP is recommended for advising on complex commercial, corporate, financial and shareholder conflict cases. The firm combines its litigation expertise  with a deep knowledge of the healthcare and mutual insurance sectors in particular.  It is also involved in a major stock market abuse dispute. Healthcare providers and insurers, as well as investors and companies are clients. The highly recommended Gilles Bigot chairs the practice, to which  Anne-Carine Ropars-Furet, Mathilde Lefranc-Barthe and Sara Susnjar also contribute.  

Key clients



Ramsay Générale de Santé

SC Johnson

Agefos PME


Vert Marine


Union Asset Management

Vivalto Santé


Holding Portugal Luxembourg

Industry focus: Healthcare and life sciences Tier 2

Winston & Strawn LLP advises a large and diverse client base made up of healthcare providers, clinics, laboratories, professional organisations and associations, individuals and groups of healthcare practitioners, as well as investors and private equity funds. The practice stands out for its very strong combined corporate, regulatory, litigation and disciplinary proceedings expertise. It advises on M&A and private equity transactions, on the setting up of healthcare companies and industry networks, and regularly manages corporate and shareholder disputes. The practice acts as a strategic adviser to several key clients, notably new market entrants, whom it guides all the way through their growth and expansion process. Practice head Gilles Bigot is highly recommended, especially for dealing with challenging corporate, regulatory and litigation matters. Other key members include Anne-Carine Ropars-Furet, Julie Vern Cesano-Gouffrant and Mathilde Lefranc-Barthe.


‘They have an unparalleled knowledge of healthcare industry regulations, practices and regulatory authorities. Each individual of the team is extremely reactive and reliable.’

‘Gilles Bigot has unmatched knowledge of the healthcare market which makes him a true strategist. He always thinks forward and never forgets his clients’ interests.’

Key clients


La Croix Rouge Française

Laboratoire ZTP

Mutuelle Nationale des Hospitaliers (MNH)


Ramsay Générale de Santé

Dispute resolution: International arbitration Tier 5

Winston & Strawn LLP


‘The team shows excellent coordination and motivation, and is hard working.’

‘The team is particularly strong in arbitration-related litigation regarding enforcement and the setting aside of arbitral awards.’

‘Maria Kostyska is outstanding, thoughtful and determined. She has a particularly impressive international perspective, being multi-lingual and admitted in several jurisdictions. She also sits as an arbitrator so knows what it is like from that side of the fence.’

Key clients

Republic of Ecuador

Ministry of Justice of Ukraine


Mergers and acquisitions Tier 5

Winston & Strawn LLP


They have a complete and current knowledge of the healthcare sector and have extensive experience in this area.

‘The firm is highly technical, and our collaboration has been very successful. In addition to meeting our demands, they can anticipate well what will needs to be done, which is very rare.’

‘We completely value and trust their opinion and appreciate their responsiveness.’

Key clients

Atlas Holdings, Inc.

Banque Neuflize OBC



Dada Holdings LLC

GLL Real Estate Partners

Groupe Photosol



Lear Corporation

MacLean Power


Nissan Europe SAS


SC Johnson

Soitec More than

The Jordan Company, Inc.

Transcendia Inc.

THE FIRM: Founded in 1853, Winston & Strawn LLP has offices across the Europe, the Middle East, Asia and the US. Acting for businesses of all types and sizes, as well as financial institutions and government entities around the world, the firm’s lawyers recognise that clients are looking for value beyond legal expertise and take time to understand their businesses and objectives.

Established in 1995, the Paris office of Winston & Strawn is composed of lawyers who are well-versed in European and foreign business law, litigation and arbitration. All of the lawyers in the office are members of the Paris Bar and several have been admitted to Bars in the US and other countries.

Our Corporate (Mergers & Acquisitions and Private Equity) team, comprising 21 lawyers, including 7 partners, handles mergers & acquisitions operations of all sizes and of all levels of complexity for a wide variety of clients.
Our team maintains strong relationships with clients specialising in different industrial sectors, with cross-border activity significantly on the rise.
Thanks to the synergies with other Paris departments, as well as with other Winston & Strawn international offices, the Paris Corporate (M&A and PE) team is able to provide a full, efficient and coordinated legal services offer that is completely integrated. Transparent and proactive, the team matches the major international law firms on the European market.

Litigation and International Arbitration: Our Paris litigation and arbitration team assists clients in connection with disputes before state courts and within the framework of domestic or international arbitration proceedings involving large industrial, telecommunication, and media organisations. The firm is known for its representation of large French and international groups and their managers in contentious matters related to M&A and restructurings. Additional areas of experience include: civil and criminal law; contractual and commercial litigation and litigation on financial transactions; national and international arbitration; shareholder conflicts; competition and distribution; intellectual property and internet; and media, entertainment, and advertising. The firm also regularly counsels multinational companies on how to transfer personally identifiable data effectively and legally between countries, including EU member states and the United States, as well as assisting clients with preparation for GDPR compliance and counselling clients with respect to privacy shield, model contracts, and binding corporate rules.

Health Care: Our Health Care team, led by Managing Partner Gilles Bigot, continues to be one of the leading teams in the market in terms of the matters handled and turnover generated, and has more than 25 years of dedicated sector-specific experience.
Our Paris Lawyers have leading expertise and cover key aspects of the health sector in a cross-disciplinary manner, with a particular focus on advice and litigation, corporate (including mergers and acquisitions and private equity), business law, public and private law and the issue of the manager status.

Department Name Email Telephone
Managing Partner Gilles Bigot
Corporate Jérôme Herbet
International Arbitration Anne-Carine Ropars-Furet
Litigation Mathilde Lefranc-Barthe
International Arbitration Maria Kostytska
Corporate Sara Susnjar
Corporate Julie Vern Cesano-Gouffrant
Labour and Employment Virgile Puyau
Corporate Stéphane Sabatier
Private equity Nicola Di Giovanni
Tax Bertrand Dussert
Corporate Jean-Patrice Labautière
Finance Mounir Letayf
Photo Name Position Profile
Mr Gilles Bigot  photo Mr Gilles Bigot
 Aurelie Camard  photo Aurelie Camard
 Nicola Di Giovanni  photo Nicola Di Giovanni
Mr Jérôme Herbet  photo Mr Jérôme Herbet
 Rim Khirddine  photo Rim Khirddine
Ms Maria Kostytska  photo Ms Maria Kostytska
 Jean-Patrice Labautière  photo Jean-Patrice Labautière
 Mounir Letayf  photo Mounir Letayf
Ms Lefranc-Barthe Mathilde  photo Ms Lefranc-Barthe Mathilde
 Virgile Puyau  photo Virgile Puyau
Ms Anne-Carine Ropars-Furet  photo Ms Anne-Carine Ropars-Furet
 Stéphane Sabatier  photo Stéphane Sabatier
 Sara Susnjar  photo Sara Susnjar
 Julie Vern Cesano-Gouffrant  photo Julie Vern Cesano-Gouffrant
Number of lawyers : 950+
at this office : 30+
Contact : Gilles Bigot (
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