Matthieu Boissavy practices criminal defense as a lawyer, and dispute resolution as a mediator or arbitrator, both amicably and judicially. He takes a multi-disciplinary approach to conflicts, taking into account law, argumentation and behavioral sciences.

He applies the principles of creative thinking to find effective solutions to complex legal problems and disputes.He works mainly in criminal and disciplinary law, arts and media law, compliance and human rights.
‍
He assists and defends individuals or legal entities, states or public authorities in defending their rights and interests in crisis situations and disputes. Whether acting as plaintiff or defendant, alongside civil parties, defendants or defendants in trials involving general criminal law, business criminal law, art criminal law, press offenses (defamation, insults, invasion of privacy, etc.), infringement proceedings, tort or contractual liability or art market law.

He is also developing his expertise on the subject of respect for human rights and the environment in the context of corporate duty of care.

When he is not acting as a lawyer, he is appointed as a mediator or arbitrator.

Trained in continental law in France and in common law in the United States, he defends clients in international litigation, notably in international criminal law or actions for the restitution of cultural property.
‍

As a mediator, he intervenes in disputes between holders of intellectual property rights, notably in the publishing, audiovisual production and entertainment sectors, between artists and art market players, or between partners in commercial companies or associations.

‍Trainerand lecturer, he gives presentations, lectures and training in criminal law and procedure, media law, intellectual property, art law, lawyer ethics, rhetoric and public speaking practice, advocacy, negotiation and mediation.

He is invested in the life of the bar in defense of the legal profession. Elected by his peers in 2017 as a member of the Conseil de l'Ordre du Barreau de Paris until 2019 and then, in 2020, as a member of the Conseil National des Baraux for the 2021-2023 term, he was notably responsible for criminal law and civil liberties issues as vice-chairman of the CNB's Commission Libertés et Droits de l'Homme. In the course of his work for the CNB, he has developed expertise in the areas of lawyers' freedom of expression, attorney-client privilege in the context of searches and seizures, defense ethics and professional conduct, and relations between lawyers and judges. He has taken part in the work of the Joint Consultative Council on Judicial and Legal Ethics.

He is the author of several articles on legal issues, the legal profession and the justice system. He is a contributing author to three books: Influencer la démocratie, démocratiser l'influence (2004); Reconstruire la justice (2006); Manifeste pour la justice (2011).

- Admitted to the Paris Bar, 1993
- Attorney-at-Law at the New York Bar, 1999
- CNMA Mediator, accredited by the Paris Court of Appeal
- Former member of the Conseil national des barreaux (2021 - 2023)
- Former member of the Conseil de l'Ordre du Barreau de Paris (2017 - 2019)
- 11th Secretary of the Paris Bar Conference, 1995
- New York University School of Law, Master of Comparative Jurisprudence (Fulbright Scholar)
- The Hague Academy of International Law, SP Droit International Privé
- Paris X-Université, DEA Droit Privé - DESS Droit du Commerce International

Member ofAvocats Ensemble (ACE),Union Internationale des Avocats,American Bar Association, New York City Bar Association,Association des Médiateurs du Barreau (AME),Association des Avocats Pénalistes (ADAP), Cercle K2.