The Paris office will open on 1 February and cover a full range of IP services, including patents, trademarks and designs.
J A Kemp currently has offices in London, Oxford, Cambridge and Munich. The new office will expand its reach in Europe, the US and Japan.
The firm has seen a 30 percent increase in staff over the past five years and opened its Cambridge office in 2016.
The Paris office will be lead by Graham Lewis and Jimmy Nicholls who are partners at J A Kemp.
Lewis and Nicholls are both patent attorneys with a specific focus on biotechnology and life sciences.
They will be joined by trademark partner, James Fish, who will lead the firm’s Paris-based trademark services.