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Distinguished in IP prosecution circles, Ernest Gutmann-Yves Plasseraud (EGYP) is perhaps best known for its representation of Institut Pasteur in patent matters, such as oppositions and appeals, both in European jurisdictions and throughout the world. Continuing a case from 2009, star patent partner Anne Desaix is analysing the prior art of a 20-year-old patent concerning the diagnostic means of HIV treatment, in a defence proceeding for Institut Pasteur against Bayer Healthcare. Other prestigious pharmaceutical clients include Snecma and BioAlliance Pharma, as well as French public health institutions. Plant biotechnology is an equally important area the team has developed a niche in, as Carol Almond-Martin leads a petition for Limagrain before the Technical Board of Appeal of the European Patent Office (EPO) over the patentability of an application granted to a British company for a plant modification process. Trade mark partner Martine Dehaut's department at EGYP primarily acts for luxury goods brands in the wine and fashion industries, securing the Cristal mark for Champagne Louis Roederer under an international forum-shopping strategy.

Quality local IP boutique Duclos Thorne Mollet-Viéville & Associés handles all domestic and cross-border matters related to patents, trade marks, designs and models, distinctive corporate signs, copyright and technology rights. The group represents international corporate groups and their French subsidiaries, as well as major French corporate groups in diverse sectors such as energy, chemical, pharmaceuticals, automotive equipment, telecommunications, audiovisual, entertainment and luxury goods. Thierry Mollet-Viéville comes highly recommended in patent litigation.