Jean-Mathieu Bertho

Jean-Mathieu is the founding and managing partner of the Paris office.

He is an experienced IP lawyer, with a vast practice that covers patents, trademarks, copyright and registered designs, both in litigation and transactional matters. His expertise also extends to IP-related matters such as unfair competition and new emerging IP issues.

Jean-Mathieu collaborates closely with his team to provide comprehensive advice, support, and guidance in litigation to both local and international clients. He has handled numerous pan-European cases, allowing him to offer effective strategies that meet the clients' expectations through innovative solutions.

His keen interest in emerging IP issues has led him to work on notable, precedent-setting matters including:

• Jurisdiction of French Court for the infringement of IP rights (1996)
• 3D trademarks
• Upcycling vs trademark infringement
• Infringement of IP rights and liability for influencers
• The legal status of dupes
• Greenwashing & IP

Professional Experience

Jean-Mathieu was the founding partner of the law firm Bertho & de Haas before opening the Paris Office of Jacobacci Avvocati – Avocats in 2009.

Education and Teaching

Jean-Mathieu graduated from the University of Rouen with a post graduate degree in International Law.

He lectured at the University of Rouen in Civil Law and in Customs Law (as it relates to the enforcement of Intellectual Property).

Professional Affiliations

Jean-Mathieu was admitted to the Paris Bar in 2002.

Jean-Mathieu is member of:

• INTA, member of the Emerging Issues Committee
• Experts College of the Union des Fabricants
• APRAM
• MARQUES.

Publications and Recognition

Jean-Mathieu is co-author of:

• Copyright Litigation Thomson Reuters Practical Law (2022),
• Trade Marks - Chambers Global Practice Guides (2018);
• Luxury Law – Jurisdictional Comparisons, ed. The Global Legal Post (2016).

He regularly speaks in conferences on subjects such as:

• Dupes, UNIFAB European Forum of Intellectual Property (2024),
• Dialogues on Regulating Influencer Marketing, Indicam (2024),
• The infringement of IP rights and the liability of Influencers, World Anti-Counterfeiting Day (2023),
• Upcycling vs Trademark infringement, UNIFAB European Forum of Intellectual Property (2022),
• Pan-European and cross-border actions, UNIFAB European Forum of Intellectual Property (2017, 2019).

Over the past five years, Jean-Mathieu has been consistently ranked as a top practitioner in IP Law by legal professional magazines such as the Legal500, IPSTARS and LEADERS LEAGUE.

Passions and Interests

Jean-Mathieu is passionate about skiing and enjoys hitting the slopes during the winter season. In his free time, he also supports his local community by serving a French rugby club, which allows him to combine his love for sports with his commitment to giving back.