Ryuichiro Mashima

Patent Attorney

Practice Area

Mr. Mashima has extensive experience in trademark and design prosecution, oppositions, trials for invalidation, suits against trial decisions, searches, and licensing. He also has experience in patent prosecution in the fields of mechanical engineering, civil engineering, and construction.


B.S., School of Law, Meiji University
B.S., Department of Electrical Engineering, Faculty of Engineering Division II, Tokyo University of Science

Professional Background

Private patent firm


Bronze Tier for trademark prosecution in WTR 1000 2024 for Japan