Marianne Gabriel

Partner / Paris

Attorney-at-law (Paris Bar)

UPC Representative

European Trademark and Design Attorney

Personal assistant : Christine Thomas

Marianne Gabriel has over 20 years of experience as a French lawyer in all areas of Intellectual Property, both in advisory and litigation matters. She became a partner at CASALONGA in 2009.

She advises major French and international companies in protecting and defending their Intellectual Property rights (patents, trademarks, designs, copyright, domain names, internet, unfair competition, and parasitism). She regularly pleads before the courts and also assist her clients in mediation, favoring alternative dispute resolution methods.

She is particularly involved in IP disputes and complex litigation, both national and international, especially in the fields of pharmaceuticals, chemistry, mechanics and telecommunications. She has developed recognized expertise in Supplementary Protection Certificates (SPCs) and Standard Essential Patents SEP/FRAND.

She has extensive experience in defining and coordinating IP strategies, particularly in implementing strategic decisions in the context of asset transfers (audits, due diligence, acquisitions, mergers, etc.), drafting and negotiating contracts (assignments, licenses, know-how transfers, partnerships, confidentiality agreements, research and development agreements, etc.), and in dispute resolution.

Adjunct teaching / Professional organizations

Marianne Gabriel teaches drug law in the framework of the Master 2 Industrial Property and Health Innovations at the University of Paris VIII and regularly speaks at conferences in the field of intellectual property.

She actively participates in many professional associations: French Association of Trademark and Design Law Practitioners (APRAM), Pharmaceutical Trade Marks Group (PTMG), European Patent Lawyers Association (EPLAW), French Association of Industrial Property Attorneys (AAPI), Association of European Patent Practitioners (APEB), International Association for the Protection of Intellectual Property (AIPPI), French Association for the Protection of Industrial Property (AFPPI), Licensing Executives Society France (LES France), Stanislas de Boufflers Institute. She is notably on the Board of the AFPPI, where she serves as secretary and is also secretary of the APEB.

Latest publications

- April 2024 : “When the Court of Justice of the European Union reminds us of the need for a balanced regime!” – published in the Industrial Property Review. For more information, see under this link

- March 2024: “Preserving Evidence: Paris Local Division’s First Order Harmonizes with French Law (Case Note on UPC “C-KORE”)” with Jean-Baptiste Lecoeur and Nathan Audinet – published in European Patent Litigation in Practice (Wolters Kluwer)

- May 2022: "Lis pendens and connexity before the UPC" with Axel Casalonga – published in the Industrial Property Review. For more information, see under this link

- February 2022: "Essential patents and FRAND licenses: How to proceed when innovation becomes the standard in a global context?" with Pascaline Vincent – published in the Innovation, Technologies & Propriété Intellectuelle 2022 guide of Décideurs magazine

- December 2021: "Pitfalls to avoid in a trademark revocation action" – published in the Industrial Property Review. For more information, see under this link

- October 2020: "Les CCP, une protection convoitée sous le contrôle de la CJUE" with Jean-Baptiste Lecoeur – published in the Santé, Pharmacie & Biotechnologies 2020 guide of Décideurs magazine. For more information, see under this link

- April 2020: "The fight against Covid-19 and the Off-label prescription of known specialties" – published on LinkedIn
- March 2020: "Your contracts towards the Covid-19 epidemic" with Pascaline Vincent – published on LinkedIn
- March 2019: "The current status of supplementary protection certificates, interpretation of Articles 3 a) and 3 c) of Regulation No 469/2009 in 2018, progress?" – published in the Industrial Property Review
- February 2017: "Patentability in France" – published on Lexology
- February 2017: "Patent Enforcement through the Courts in France" – published on Lexology
- April 2016: "Focus on the innovations of the civil law reform" – published in the Industrial Property Review

Latest interventions

- April 2025: Intervention as the moderator of the second roundtable titled “The Future of Arbitration and Mediation with the PMAC” during the Conference on Arbitration and Mediation in Industrial Property: more information here

- January 2024: Intervention on “IP et AI, between protection and sharing of resources” with Ghislain de Trémiolles – AFPPI Conference

- March 2023: Presentation of the recent French Supreme Court decisions on SPCs – 3^rd edition of the conference on “Patent law in France and Europe” organized by the Institut Stanislas de Boufflers

- August 2022: Interview on the Pfizer / Moderna trial – TV News on France 2 (26 August 2022)

- November 2020: "Patents Seminars of Boufflers" – Institut Stanislas de Boufflers
- April 2019: "Trademark law in France and Europe" – Senate – Institut Stanislas de Boufflers
- October 2018: "News on patent law in France and Europe" – Institut Stanislas de Boufflers