Admitted to the Paris Bar in 2005, partner Jean-Hyacinthe de Mitry specialises in industrial property. His expertise includes both contentious and non-contentious matters in all areas of industrial property (patents, trademarks, designs), as well as unfair competition and protection of know-how and trade secrets.

In contentious matters, he regularly advises and represents French and international clients, mainly in infringement disputes and in disputes relating to agreements having a strong IP and/or technology content. Notably, he has a wide experience in national and multijurisdictional patent disputes.

In non-contentious matters, he regularly advises French and non-French clients in drafting and negotiating IP-related or technology transfer agreements, whether as standalone agreements or as part of high-stake corporate deals or projects (IPOs, joint ventures, acquisitions, infrastructure projects, etc.).

His expertise also includes copyrights, notably with respect to architectural works.

Jean-Hyacinthe is a member of the board of LES France (Licensing Executive Society) and a member of AIPPI (International Association for the Protection of Intellectual Property) and co-chair of its Unified Patent Court committee, AAPI (the French association of lawyers specialised in industrial property), APRAM (the main French trademark and models association) and EPLAW (European Patent Lawyers Association).

Jean-Hyacinthe holds a postgraduate degree (DEA) in Intellectual Property (2003) and a Master's degree in business law from the University of Paris II, and graduated from Sciences Po Paris in 2001.

 He is a lecturer at Sciences-Po Paris in Pr. Christophe Jamin's course "How Do Lawyers Think".

He joined Gide in 2004 and became partner in 2017.

« Able to work as a team on important cases and to combine the skills of each member of the practice. Very great professionalism. An international influence which facilitates the management of files. Jean-Hyacinthe de Mitry is a remarkable lawyer in the field of intellectual property. »
Legal 500 EMEA 2020

« very good lawyer with excellent strategic skills. »
JUVE Patent - Rankings France 2020

« Gide Loyrette Nouel’s intellectual property team is currently assisting a subsidiary of Dior in litigation against its founder, John Galliano, pertaining to his demand to forfeit all trade marks and uses of his name for corporate purposes. The recently promoted Jean-Hyacinthe de Mitry is currently representing Klesia in a trade mark infringement case brought by Ecclesia Versicherungsdienste in France and before the European courts. Also notable are Raphaëlle Dequiré-Portier, who advised a major fashion brand on all intellectual property issues arising from the bankruptcy of a licensee; Arnaud Michel, who continues to protect the brand of a well-known TV show; and Emmanuel Larere, who acts for clients such as Adidas and Guerlain. »
Legal 500 EMEA 2019

« Jean-Hyacinthe de Mitry comes highly recommended by peers for his profound skills advising on complex disputes, with a particular focus on technology. »
Who's Who Legal 2019