About us

We are a Norwegian international IP law firm with 43 employees and closely connected through the AIPEX alliance with similar companies in 10 European countries. Our own staff includes attorneys from six countries,  and we are steadily growing our international team of patent and trademark attorneys.

The company was founded in 1950 and is still a family business. Our international expansion is based on a strong position at home, where during the past five years, we have filed more patent applications for Norwegian industry than any other agency.

Our strategy is to maintain our strong position in the domestic market and grow our international business, particularly outside of Europe, serving as a European IP Hub for the complete range of intellectual property services.


We seek experienced Patent Attorneys - apply here

Rasmus Gjesing

Managing director, Partner

M.Sc. in Industrial Engineering and Management and Ph.D in numeric process modelling from Technical University of Denmark. Certified Danish Patent Agent (CDPA).

Previously Project Manager and IP strategy advisor at Validé and Head of Patent Department at Chas Hude IP agency in Denmark.

Technical fields: Mechanical engineering, numerical modelling, fluid mechanics, wind turbines and oil & gas technology.

Joined Hamso in 2018.

+47 51 60 51 51 / mob. +47 45 11 78 62