Mr Jean-Hyacinthe de Mitry > Gide Loyrette Nouel A.A.R.P.I. > Paris, France > Lawyer Profile

Gide Loyrette Nouel A.A.R.P.I.
15 rue de Laborde
Jean-Hyacinthe de Mitry photo

Work Department

Intellectual Property


Admitted to the Paris Bar in 2005 and Gide partner since 2017, 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 and related copyright issues), as well as unfair competition and protection of know-how and trade secrets. He has also developed an expertise in copyright relating to architectural works.


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. He has wide experience in national and multijurisdictional patent disputes, notably in the life sciences and telecom sectors. In trademark matters, he speaks before all French and EU courts.

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

Partner Gide Loyrette Nouel (2017)


English, French and Spanish


Member of the board of LES France (Licensing Executive Society), after having chaired the Young Members Congress of LES France and LES International.

Member of AIPPI (International Association for the Protection of Intellectual Property) and co-chair of its Unified Patent Court committee.

Member of AAPI (the French association of lawyers specialized in industrial property). Member of AIPPI (International Association for the Protection of Intellectual Property). Member of APRAM (the main French trademark and models association). Member of EPLAW (European Patent Lawyers Association). Member of the board of LES France (Licensing Executive Society) after having chaired the Young Members Congress of LES France and LES International.


Admitted to the Paris Bar (2005)
Postgraduate degree (DEA) in intellectual property, University of Paris II Panthéon-Assas (2003)
Master’s degree in business law, University of Paris II Panthéon-Assas (2002)
Graduated from Sciences Po Paris  (2001)

Lawyer Rankings

France > Intellectual property: Patents

(Next Generation Partners)

Jean-Hyacinthe de MitryGide Loyrette Nouel A.A.R.P.I.

Gide Loyrette Nouel A.A.R.P.I. has a strong transactional practice and handles IP litigation. The team has extensive experience in the pharmaceutical, medical devices and telecoms areas, but is also active in a wide range of sectors. Jean-Hyacinthe de Mitry handles contentious and non-contentious matters in all areas of industrial and intellectual property. Raphaëlle Dequiré-Portier and Emmanuel Larere are also noted.

France > Intellectual property: Trade marks and designs

Gide Loyrette Nouel A.A.R.P.I. is particularly well-known for its strengths in IP litigation, particularly regarding patent and trade mark disputes. Raphaëlle Dequiré-Portier and Emmanuel Larere focus on French and European trade mark and patent disputes for clients in the life sciences, telecommunications, luxury goods, technology, and consumer goods industries, among others. Jean-Hyacinthe de Mitry has extensive expertise in national and multijurisdictional patent disputes. The team is also noted for its international trademark prosecution work. Elsewhere, trade mark filings and portfolio management are other key drivers of mandates.

France > Industry focus: Healthcare and life sciences

Gide Loyrette Nouel A.A.R.P.I.‘s cross-practice expertise makes it a first-choice firm for emerging life sciences companies and venture funds. With a strong offering in patent litigation, the firm also attracts high-profile patent disputes, such as advising Sanofi-Aventis Deutschland GmbH on the French aspects of a multijurisdictional patent infringement case against Mylan regarding a patent covering an injection pen. Co-head of the practice Raphaëlle Dequiré-Portier focuses principally on patent and trademark disputes in the life sciences sector. Dimitri Dimitrov specialises in co-operation agreements and distribution networks in France and overseas, and represents companies in litigation, namely for the abrupt termination of commercial relationships. Jean-Hyacinthe de Mitry is the go-to lawyer for IP in life sciences. Arnaud Duhamel has a clear focus on equity capital markets. On the transactional side, Anne Tolila is the name to note.

France > Intellectual property: Copyright

Handling transactional and contentious mandates, Gide Loyrette Nouel A.A.R.P.I.‘s Paris copyright practice works in close conjunction with the Brussels office, offering clients in-depth expertise in EU copyright law. Representing producers, press publishers and agencies, the group frequently advises on the collection and payment of royalties. With partners and associates from both IP and TMT departments, the team is fully equipped to assist clients with intersectional issues. The group is jointly led by Raphaëlle Dequiré-Portier, Emmanuel Larere, Jean-Hyacinthe de Mitry and Julien Guinot-Deléry.

Paris > Propriété intellectuelle > Brevets

(Les grands avocats de demain)

Jean-Hyacinthe de MitryGide Loyrette Nouel A.A.R.P.I.

Gide Loyrette Nouel A.A.R.P.I. développe une forte pratique transactionnelle et traite aussi le contentieux. L’équipe possède une grande expérience des secteurs de la pharmacie, des dispositifs médicaux et des télécoms.  Jean-Hyacinthe de Mitry  intervient en conseil et en contentieux dans tous les domaines de la propriété industrielle et intellectuelle. L’équipe compte également dans ses rangs  Raphaëlle Dequiré-Portier et Emmanuel Larere . A noter, les départs de Grégoire Triet et Arnaud Michel .

Paris > Propriété intellectuelle > Marques, dessins et modèles

Gide Loyrette Nouel A.A.R.P.I. est réputé pour son expertise du contentieux de la propriété intellectuelle, notamment en matière de brevets et de marques.  Raphaëlle Dequiré-Portier et Emmanuel Larere traitent des litiges de droit des marques et des brevets français et européens, pour le compte de clients spécialisés dans les secteurs des sciences de la vie, des télécommunications, du luxe, des technologies et des biens de grande consommation. Jean-Hyacinthe de Mitry est expert dans la gestion des contentieux de dimension nationale ou internationale, en matière de brevets. L’équipe est également reconnue pour son savoir-faire dans la défense des marques au plan international. Le champ d’expertises couvre enfin les sujets de dépôts de marques et la gestion de portefeuilles de droits. A noter, les départs de  Grégoire Triet et Arnaud Michel.

Paris > Propriété intellectuelle > Droits d’auteur

Gide Loyrette Nouel A.A.R.P.I. traite des dossiers en conseil et en contentieux. Les synergies entre les bureaux parisien et bruxellois permettent aussi au cabinet d’offrir des compétences en droit européen du droit d’auteur. Le cabinet assiste des producteurs, des éditeurs de presse et des agences, qu’il conseille notamment en matière de perception des royalties. La pratique, qui combine des experts de la PI et du secteur des TMT, est codirigée par  Raphaëlle Dequiré-Portier, Emmanuel Larere, Jean-Hyacinthe de Mitry et Julien Guinot-Deléry. Arnaud Michel and Grégoire Triet ont quitté le cabinet.