We are iX, a Yokohama-based patent and trademark application and registration firm, offering a full range of services in English.

Our People

Masayoshi YOSHIDA

Patent Attorney Reg:10910

After graduating from Musashi Institute of Technology with a degree in electronics and communication engineering, Masayoshi gained experience in the communication and in-vehicle equipment industry.  Masayoshi passed the patent attorney exam and registered as a patent attorney in 1996 before joining an IP section of a huge computer maker. Masayoshi joined iX patent law firm, P.C. in September 2025.
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iX patent law firm, P.C.