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Gwennhaël Le Roy

Associé / Paris

Conseil en Propriété Industrielle Brevets

Mandataire agréé près l’OEB

European Patent Litigator

g.leroy@casalonga.com

Assistante : Valérie Daoud

v.daoud@casalonga.com


Education

  • - Master’s degree in Intellectual property Law, specialization in Industrial property, CEIPI (Strasbourg University) – 2019
  • - Post-graduate degree in Industrial Property Law (Strasbourg University) – 2004
  • - Graduate degree in Chemical Engineering of Ecole Européenne de Chimie, Polymères et Matériaux (Strasbourg) – 2003

Practice description

Gwennhaël Le Roy began his career with CASALONGA in 2004 and became partner in 2015.

He focuses on drafting and prosecuting both domestic and foreign patent applications. He also gives opinions on freedom to operate, studies the validity of patent claims.

He also regularly represents clients in patent application proceedings before the European Patent Office, including opposition and appeal proceedings.

He also has experience of patent litigation.

Gwennhaël Le Roy represents a wide range of clients ranging from small start-ups and laboratories to multinational corporations in the fields of organic chemistry, cosmetics, chemistry and physics of materials, synthesis and characterization of polymers, sol-gel processes, colloids, pharmaceutical.

Adjunct teaching / Professional organizations

Gwennhaël Le Roy is a Member of the Examination Committees for the European qualifying examination (EQE), aiming at establishing the list of European Patent Attorneys.

He is a member of the French Patent and Trademark association (CNCPI “Compagnie Nationale des Conseils en Propriété Industrielle”) of which he co-chairs the UP & UPC committee. He participates in the Dispute Resolution Committee of the Licensing Executives Society France (LES France) and in the IP Practice in Europe Committee of the American Intellectual Property Law Association (AIPLA).
He is also a member of the European Patent Institute (epi) and has been elected as a substitute member of the Litigation Committee (LitCom), which considers and discusses all aspects of patent litigation in Europe, in particular on infringement and validity of European Patents, and plays an active role in monitoring, discussing and preparing epi positions on matters concerning the Unitary Patent (UP)/Unified Patent Court (UPC) system.

Latest publications

  • - December 2022 : « A new patent for Europe » avec Julien Thon – published in Le Figaro, on 6th December 2022. For more information, see under this link

Latest interventions

  • - April 2023 : Presentation of a comparison of the two systems for invalidating a patent in Europe (opposition before the EPO and action for revocation before the UPC) in order to show the advantages and disadvantages of each system - "IP Practice in Europe" committee of the AIPLA (American Intellectual Property Law Association)
  • - June 2022 : Workshop on "How to adapt my company’s strategy to JUB-related risks" – webinar entitled “Companies, ready or not ready for the UPC ?” organized by the Dispute Resolution Committee of LES France (Licensing Executives Society France)
  • - March 2022 : Interview on the future European patent system – LexInside (Décideurs TV). Find the program under this link

Languages

French, English, German

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