The firm represents more than 200 clients ranging from single inventors and start-ups to academic institutions and international corporations.

[6] The company has offices in Japan and the United States, as well as professional relationships with associate law firms located in more than 80 countries.

It is headquartered in the Kasumigaseki Common Gate West Tower in Kasumigaseki, Chiyoda, Tokyo, Japan, and has a representative office in San Jose, California, U.S.A.[8] Sugimura is repeatedly ranked among top Japanese law firms.

[11] Intellectual Asset Management recognizes the firm as a leading patent professional in Japan.

[13] The firm appears in the Legal 100 of Acquisition International magazine,[14] a vanity award Patent attorneys from Sugimura have featured in or written various articles about IP industries,[16][17] and have been invited as speakers at various institutes[18][19][20] and IP meetings.