Thibault Guillemin is a preferred contact of corporations, institutions and their representatives facing complex issues or reputational risks. He advises as well as litigates on crisis situations entailing simultaneous regulatory, ethical, criminal and social aspects.

Beyond his counseling activities, Thibault is a next generation litigator who defends companies and their managers facing internal investigations and/or enforcements.  He represents for many years several companies and individuals in high-profile cases.

Prior joining the Paris Bar, Thibault practised as a counsel in a French law firm of supreme court attorneys (avocats au Conseil d’Etat et à la Cour de cassation) where he managed many cases involving government bodies.

Furthermore, he advises listed or non-listed companies in setting up, evaluating and strengthening their compliance programs (codes of conduct, internal audit, risk analysis, KYC, professional alerts, training), both with regard to French legislation (Sapin II, Devoir de vigilance) and foreign ones (FCPA, UKBA).

His practise focuses as well on economic sanctions (embargoes, export controls) and export controls that French and European companies may face (sanctions programs, extraterritoriality, blocking statutes, dual-use items, etc.).

Thibault Guillemin's team has been recognized as "Excellent" for its white collar practise by Leaders League 2023, and appointed as "Rising Team 2020" for his Compliance expertise by the Trophées du Droit, a panel of French high-level professionals awarding the best lawyers for their practise. His team has been also ranked by Legal500 as a "Top Tier 3" compliance law firm.

He is lecturer in the Executive MBA Legal Intelligence at the Ecole de Guerre Economique (EGE) and regularly participates in executive programs offered by Paris-Dauphine, one of the most distinguished law schools. 


  • Paris-Dauphine University, University degree, Ethics & Compliance, Anti-corruption Law, 2017
  • Admitted to the Paris Bar, 2002
  • Institut d’Études Politiques de Paris (Sciences Po), Master's degree in Public Affairs, Public Law, Regulatory and Competition Law, 2001
  • Versailles St Quentin University, Master's degree in Public Law, Faculty of Law, 1999

Associations / Outside commitments

  • International Bar Association
  • Le Cercle de la Compliance (ethics & compliance practitioners' association)
  • Association des Avocats Pénalistes (defense attorneys' association)
  • IFA (French Institute of Board Members)
  • Comité Stratégique de Filière des Services Juridiques et du Droit

Recent Publications

  • US Sanctions Programs v. European Blocking Statute : French Companies Caught in The Crossfire, in Revue Critique de Droit International Privé, 2022/02, n°2
  • The Executive Officer's liability for Compliance, in Dictionnaire Permanent, Editions législatives, 2022
  • Compliance in M&A operations, in Dalloz Formation, 2021 (interview)
  • Contractualizing The Risks of Foreign Economic Sanctions: A Cure Worse than The Disease? in Semaine juridique Edition et Affaires n° 28, July 9, 2020
  • Debarment from Public Procurement for Corruption: Theory and Practice, in Semaine juridique Edition et Affaires n°31-35, August 1st, 2019
  • The Adversarial Principle during Internal Investigations, in Décideurs Compliance-Fraudes-Investigations, Paroles d'experts, 2019
  • Criminal Liability for Compliance Officers: the French Perspective, in Revue Internationale de la compliance et de l’éthique des affaires, October 2018
Stéphane FLICHY

Stéphane Flichy assists our French and foreign clients on their employment law issues, both in advisory and litigation capacities. 

He is fully dedicated to defending and advising companies and their executives. 

His team handles both day-to-day issues and disputes, and more exceptional judicial or organizational proceedings. 

He also assists employers' organizations.

He is involved in a number of sensitive, complex cases requiring simultaneous mastery of social, criminal and corporate issues.

Graduate of an LL.M. from University College London, he assists a number of leading British and American companies.


  • LLM University College of London, 2003
  • Audencia Nantes, Management School, 2002
  • Faculty of Law, Versailles St Quentin University, 2000

Associations / outside commitments

  • Avosial (employment law attorneys' association)
  • Association des Avocats Pénalistes (defense attorneys' association)
  • AmCham (American Chamber of Commerce in France)

As a specialist in both intellectual property law and new information technologies, Alexis Guillemin is an astute expert of all issues of the company’s intangible heritage. Thus, he assists our clients in managing and valuing their immaterial assets both in France and abroad.

Beyond his strong background in copyright as well as in patents, trademarks and designs litigations, Alexis Guillemin assists our clients with the implementation of the big data processes (GDPR), data mining and protection of personal data (French Data Protection Authority -CNIL-, French Data Protection Officer -CIL-, Privacy Shield, cybersecurity).

He also handles the implementation of complex legal schemes related to new information technologies and media law and devotes a substantial part of its activity to the drafting and negotiation of IT contracts.


  • Faculty of Law, Versailles St Quentin University
  • Certificate of specialization issued by the Paris Bar council in intellectual property law
  • Certificate of specialization issued by the Paris Bar council in information technologies and communication law

Associations / Outside commitments

  • Permanent trainer at the French National Institute of Industrial Property (INPI)
  • INTA (International Trademark Association)
  • APRAM (Association of practitioners of trademark and design law)
  • AIPPI (International Association for the Protection of Intellectual Property)
  • IWLA (International Wine Law Association)
  • Droit et Procédure 

Mathilde Delaunay is an expert on non-profit organizations. She advises all types of organizations in this sector (associations, foundations, endowment funds, etc.) on all aspects of their legal and fiscal operations (creation, functioning, restructuring, project management, seminars and training).

She also assists companies, family offices, and institutions with the legal and financial structuring of their general interest projects.


  • University of Toulouse, Master 2 (Master’s degree Year 2), Public law, Territorial Government law
  • Admitted to the Paris Bar, 2009
Jan-Baudouin LALLEMAND

Jan-Baudouin Lallemand specializes in business litigation, white-collar crime and press law.

With a dual background in law and finance, he also advises French and foreign listed and unlisted companies, as well as public entities, in particular in connection with their governance and compliance issues (anti-corruption, duty of care and international sanctions). 

Prior to joining the firm, Jan-Baudouin practiced with leading French and American law firms, as well as with the legal department of an investment bank.

His experience, as well as his French and Anglo-Saxon academic background, predispose him to work on complex transnational cases.



  • LL.M., University of Pennsylvania - Law School, 2015
  • Master of Finance & Strategy, Sciences Po Paris, 2015
  • Master of Private Law, University of Versailles Saint-Quentin en Yvelines, 2015
  • Admitted to the Paris Bar, 2018
Juliette GARCIA

Juliette Garcia specializes in labor and social security law and offers counsel as well as assistance in litigation. She advises and defends French and foreign compagnies on individual and collective labor relations (employment issues (employment contracts, dismissals, restructuring, professional elections, employee savings schemes, working hours, management packages, social audits, etc.).

She also handles issues relating to the dismissal of corporate officers involving labor law, corporate law and, where applicable, criminal law issues.


  • Master 1, Economic Law, Sciences Po Paris, 2016
  • Master 2, Business, Market, Regulation,  Sciences Po Paris, 2018
  • Admitted to the Paris Bar, 2020

Anouk Bréjon assists French and international clients in criminal and commercial litigation, as well as in white collar crime, at each stage of the proceedings.  

She prepares their defence before civil, commercial and criminal courts.  

She advises listed and non-listed companies in compliance and risk management matters. She notably assists them in setting up, assessing and implementing their compliance programs (anticorruption, devoir de vigilance, etc.) and in conducting internal investigations. 

Before joining Guillemin Flichy, Anouk worked in the litigation department of a top-ranked French law firm. This first experience gave her the opportunity to work with a wide range of clients in both legal advice and litigation matters.  


  • University of Exeter, LL.M, International Commercial Law, 2018 
  • University of Rennes, Postgraduate degree in French and British Business Law (Magistère Juriste d’Affaires Franco-Britannique), 2019 
  • Paris-Dauphine University, Master 2 (Master’s degree year 2), Business Law, 2019
  • Admitted to the Paris Bar, 2021 

Ingrid Bruyas’ practice focuses on providing legal advice and litigating all areas of intellectual property law (trademarks, designs, patents, copyright and related rights) and new information technologies (software, databases, personal data). She assists companies in the protection and enhancement of their intangible assets, from their creation (trademark clearances, filings with the intellectual property offices) to their defense (pre-litigation, judicial and administrative litigation). 

Her international background and her previous experience in Anglo-Saxon law firms allows her to advise diversified clients, both French and foreign.


  • LLM in Intellectual Property Law, Golden Gate University, 2018
  • University of Strasbourg, Center for International Intellectual Property Studies (CEIPI), Master 2, Intellectual Property and international trade, 2019
  • Admitted to the Paris Bar, 2023
Support Staff
Patricia HUVELIN

After a 10-years experience in the advertising industry where she developed key accounts customers, Patricia Huvelin provides the administrative and financial management of the firm (HR, general services, accounting and management control), as well as its communication (press, social networks, events, trainings), responsibilities for which she can rely on a dedicated team.

Her versatility and great listening, combined with real adaptation skills make her a privileged interlocutor to our suppliers and partners.


  • EFAP – Ecole des nouveaux métiers de la communication (Communication’s new jobs School)
  • HEAD (Hautes Etudes Appliquées du Droit), Master Office Manager / Secrétaire Général, 2019

Associations / Outside commitments

  • COM’SG – Cercle des Office managers et Secrétaires Généraux de Cabinets d’Avocats (association of law firms’ office managers and secretaries general)

Wendy Veerasamy is in charge of the physical and telephone reception of the firm.

She takes part in the administrative management of the general services.


  • Professional Qualification certificate