Of Counsel

Jacques LAGRANGE joined the firm in 2003 after 12 years spent in the IP department of a steel company and has been a consultant for LAVOIX since July 2010.

Practice areas

Patent prosecution

Patent litigation

Unfair competition



Electronics, Electricity, Physics, Mechanics

Technology Areas

Mechanical and Electrical


Process control


Steel Industry


Naval Engineering

Professional Admissions

French Industrial Property Attorney

European Patent Attorney


  • Graduate from the Center for International Intellectual Property Studies (CEIPI), 1995
  • Engineer, Ecole Centrale de Paris, 1972

Professional Experience

He previously worked in the research department, in various production departments and with the strategy and corporate planning division of the steel company where his activities included technology, IP management and negotiation of agreements.

Jacques LAGRANGE's work includes patent prosecution before the French and European Patent Offices and in many countries such as the United States and Japan.

He has also conducted many oral proceedings before the Opposition Divisions and Boards of Appeal of the EPO. His practice also includes patentability, clearance opinions, litigation, IP strategies design.

  • LAVOIX - WTR1000
  • LAVOIX - Legal500
  • LAVOIX - IPStars
  • LAVOIX - Patent1000
Certification ISO 9001:2008 applicable to all the IP attorney activities and for all its offices.