Our firm

At GROSSET-FOURNIER & DEMACHY we have built our reputation on managing complexity. We work with inventions in the fields of chemistry and life sciences, from the simplest to the most complex.

Our firm of patent attorneys was established in 1992 by Catherine Grosset-Fournier and Charles Demachy.

A graduate of the École Nationale Supérieure de Chimie in Paris, Catherine Grosset-Fournier is passionate about scientific research and entrepreneurship.

The preferred contact for researchers and entrepreneurs, Catherine Grosset-Fournier offers clients 35 years’ experience in a constantly evolving field.

Our team currently comprises two partners, Catherine Grosset-Fournier and André Bourgouin, three professional representatives before the EPO, three patent attorneys, and five patent engineers.

Based in Paris and Bordeaux, we operate in France, across Europe, and internationally. Working in both French and English, we proactively maintain relationships with a long-established network of overseas and European partners.

We also work with the firm Omnipat as part of the economic interest grouping called Keep Ip, which aims to provide our multidisciplinary clients with advice covering all current technologies. Omnipat specialises in the fields of electronics, microelectronics, computer science and telecommunications, in particular information and communications technologies.

Our clients

  • Innovators: researchers, entrepreneurs, manufacturers
  • Academic research, transfer and exploitation of technology, industrial development, investment funds
  • Biotechnology, chemistry, pharmaceuticals, cosmetics, plant and agri-food sectors
  • Start-ups, SMEs, large groups