Mrs Raphaëlle Dequiré-Portier > Gide Loyrette Nouel A.A.R.P.I. > Paris, France > Lawyer Profile

Gide Loyrette Nouel A.A.R.P.I.
15 rue de Laborde
Raphaëlle Dequiré-Portier photo

Work Department



Raphaëlle Dequiré-Portier is a partner in Gide Loyrette Nouel’s Intellectual Property, Telecoms, Media & Technology Department.

Her practice focuses mainly on advising and assisting clients in disputes with regard to patents and trademark law. She has gained wide experience in domestic and pan-European disputes, particularly in the field of patent infringements and the validity of patents. Raphaëlle also advises on copyright issues and unfair competition law.

Raphaëlle Dequiré-Portier defends and advises some of the world’s leading brands, notably in the luxury, jeanswear and consumer goods sectors. In patent law matters, she has advised on the most recent cases concerning drugs, particularly with regard to supplementary protection certificates.


Partner Gide Loyrette Nouel (2015)
Joined the Firm (2001)


French, English


Member of: the APRAM (French Association for Trademarks and Models Lawyers), the INTA (International Trademark Association) and the AIPPI (International Association for the Protection of Intellectual Property).


Admitted to the Paris Bar (2001)
Postgraduate degree (DESS) in Intellectual Property Law, University of Paris II  (2000)
Honours degree (Maîtrise) in Private Law, University of Paris II  (1999)
Lauréat de la Faculté (Faculty Scholar) University of Paris II  (1998)

Lawyer Rankings

France > Intellectual property: Patents

(Leading individuals)

Raphaëlle Dequiré-PortierGide Loyrette Nouel A.A.R.P.I.

With notable strength in the pharmaceuticals, medical devices and telecoms sectors, Gide Loyrette Nouel A.A.R.P.I. is renowned for its patent litigation practice, before both the French and European courts, where it represents clients involved in infringement matters, revocation proceedings and validity disputes, including supplementary protection certificate (SPC) matters. The team is led by Raphaëlle Dequiré-Portier, known for her experience handling patent litigation for the life sciences sector, alongside Emmanuel Larere and Jean-Hyacinthe de Mitry, who handle contentious and transactional matters.

France > Intellectual property: Trade marks and designs

Gide Loyrette Nouel A.A.R.P.I. offers French and foreign clients a leading IP litigation service, handling trade mark disputes before French and European courts and the EUIPO, with a particularly strong track record in the luxury and fashion industries. Infringement and parasitism cases form the base of the firm’s work in this area, with cancellation proceedings and invalidity actions rounding out the practice’s offering. Emmanuel Larere is an experienced trade mark litigator, while also assisting with the creation, filing and management of IP rights, and Raphaëlle Dequiré-Portier leads on contentious matters in France and Europe, focusing on the life sciences sector. Jean-Hyacinthe de Mitry advises technology companies on infringement disputes and technology transfer agreements.

France > Industry focus: Healthcare and life sciences

(Leading individuals)

Raphaëlle Dequiré-PortierGide Loyrette Nouel A.A.R.P.I.

Best known for its intellectual property and patent litigation work, the practice at Gide Loyrette Nouel A.A.R.P.I. advises leading laboratories, venture funds, and emerging life sciences companies. Practice co-head Raphaëlle Dequiré-Portier has a wealth of experience handling both domestic and pan-European patent disputes, and Jean-Hyacinthe de Mitry specialises in unfair competition and protection of trade secrets. Dimitri Dimitrov has expertise in competition and distribution law, and jointly leads the team alongside Emmanuel Larere, Arnaud Duhamel, and Anne Tolila.

France > Industry focus: Luxury goods

The luxury goods team at Gide Loyrette Nouel A.A.R.P.I. is a force in the marketplace, advising on and safeguarding the IP of household names in the fashion, jewellery, cosmetics, beverages and hospitality industries, with clients including Christian Dior, LVMH and L’Oréal. The group is headed by IP litigation expert Emmanuel Larere; Raphaëlle Dequiré-Portier, who manages unfair competition law matters; Franck Audran, who handles complex competition law proceedings; IT projects expert, Thierry Dor; Olivier Diaz; who has considerable experience advising on transactions involving luxury goods companies; David Jonin, who assists with employment law as it relates to the industry; and Julien Guinot-Deléry, who specialises in NFTs and metaverse issues.

France > Intellectual property: Copyright

Companies operating in the fashion, art and architecture industries regularly instruct Gide Loyrette Nouel A.A.R.P.I. on a spectrum of litigious and commercial copyright matters at the French and EU level, with the firm’s Brussels office assisting in European cases. Under the leadership of Raphaëlle Dequiré-Portier, Emmanuel Larere, Jean-Hyacinthe de Mitry and Julien Guinot-Deléry, the practice represents clients in infringement, unfair competition and contractual disputes, in addition to advising on copyright licence and image rights agreements. Furthermore, the practice group assists producers, agencies and the individuals they represent in the collection and payment of royalties relating to the use of their IP.