Stéphane Masi

French & European Patent Attorney

Lorient office
+33 (0)1 49 64 60 00

Stéphane Masi has worked in IP in both industry and private practice since 2007. First based in Paris, he moved to Brittany in 2011 to work as a patent engineer before joining Novagraaf France in 2021.

Career history

Stéphane holds a PhD in chemistry from the University of Paris (Chimie ParisTech) as well as a Diplôme d'études approfondies (DEA) in bioorganic chemistry. He completed his CEIPI (patents) at the University of Strasbourg in 2008. He has been a European Patent Attorney since 2017 and an Industrial Property Attorney in France since 2020.


Stéphane is member of EPI and CNCPI.


  • French
  • English
  • Spanish

Areas of expertise

  • Freedom to operate, patentability, infringement and patent validity reports and opinions
  • Patent drafting (French and English)
  • Patent prosecution for French, European, international (PCT) and foreign patent applications
  • Patent portfolio strategy and optimisation
  • Management of examination, grant, opposition and appeal procedures before the European Patent Office (EPO)
  • Litigation and pre-litigation strategy and management
  • Invention protection
  • Validity studies of third party patents

Industry specialisms

  • Automotives & aviation
  • Chemistry
  • Construction
  • Energy
  • Food & food technology
  • Greentech/Cleantech
  • Home appliances
  • Licensing
  • Life Sciences & biotech (pharma, medical devices, biosensors)
  • Mechanics (incl. material processing)
  • Nanotechnologies
  • Oil & gas