We use cookies to deliver our online services. Details of the cookies we use and instructions on how to disable them are set out in our Cookies Policy. By using this website you agree to our use of cookies. To close this message click close.

Stanislas Roux-Vaillard


Stanislas Roux-Vaillard
English, French, German
Practice Group
Intellectual Property

As the partner in charge of patent litigation in the Hogan Lovells Paris office, Stanislas Roux-Vaillard is mainly involved in national and multi-jurisdictional patent litigations, mediations and arbitrations, representing international clients, notably in the field of life sciences, telecommunications and chemistry. Stan brings insight to clients willing to take advantage of French patent law. Admitted to the Paris Bar, he represents clients by advocating in IP French courts, on first instance and on appeal.

With a network of talented patent litigators worldwide, Stan also takes part in the conception and execution of the multijurisdictional strategies of clients, along the specifics of their industry and business model. He is involved in a number of pharma and biotech cases helping clients make the most of their patent exclusivity. He represents clients in the telecom industry in contractual defences to standard essential patents and in non-essential patent claims brought by non-practicing entities.

In specific chemistry and mechanical engineering cases, his ability to use evidence gathering tools such as the saisie-contrefaçon helped clients gain leverage for early settlement of infringement situations. Stan is also involved in patent portfolio and know-how review and licensing, notably in corporate deals where IP valuation is key. He regularly writes articles on intellectual property developments in France. Stan is the author of the 'France' chapter of The Intellectual Property Law Review, Law Business Research Ltd and is a research partner of the ABA Section of International Law.

'One of the best' in patent litigation

Chambers Global 2015

Representative experience

Represented a French pharma company in defending a €1.5m claim initiated by a competitor post preliminary injunction proceedings.

Assisted and represented a Taiwanese smartphone manufacturer in defending its freedom to operate against essential/non-essential patent infringement claims brought by a competitor.

Assisted U.S. biotech specialized in testing of genetic diseases in animals, in getting royalties from a French laboratory claiming prior use rights.

Assisting a chemical company in a mediation to settle an ownership dispute regarding results of a co-development project on microwave activation of HDPE.

Assisted and represented a U.S. pharma company in defending its patent over a stereo selective process and recovered half a million euros in lawyer's fees.

Assisting and representing a car mapping/designing software leader in the misappropriation of its know-how by the seller of a morphing and mapping technology.

Assisting a French energy leader in acquiring a 6000+ patents portfolio as part of the acquisition of a nuclear power leader in a €2.7bn deal.

Education and admissions


  • Doctorat, Université Paris II, Panthéon-Assas, 2001
  • LL.M., John Marshall Law School - Chicago, 2000


  • International Association for the Protection of Intellectual Property ("AIPPI")
  • Association des Praticiens Européens des Brevets ("APEB")
  • European Patent Lawyers Association ("EPLAW")
  • Association Française des Praticiens du Droit des Marques et des Modèles ("APRAM")

Bar admissions and qualifications

  • Paris

Latest thinking and events

View More
Loading data