The following table shows the ranking of Japanese IP law firm. The ranking is based on the following conditions.
- Technical field: AI (a population consists of patents that contain artificial intelligence-related terms in the full text).
- Status: Japanese granted patents in 2018 (registration date).
- First country: All (i.e., patents with claiming priority of a Japanese application or a foreign application, or without claiming priority).
- Count: The number of patents handled by each Japanese IP law firm was counted (if the applicant is represented by a firm member (attorney), it was counted as being handled by the firm).
|Ranking||No.||IP law firm||Website|
|1||111||Sakai International Patent Office||View|
|2||110||SHIGA International Patent Office||View|
|3||79||ITOH International Patent Office||View|
|5||52||TAIYO, NAKAJIMA & KATO||View|
|6||50||ONDA TECHNO Intl. Patent Attys||View|
|7||46||SUZUYE & SUZUYE Intellectual Property Law||View|
|8||45||SEIWA PATENT & LAW||View|
|9||35||RYUKA IP LAW FIRM||View|
|11||29||Ohtsuka Patent Office||View|
|12||27||Soei Patent & Law Firm||View|
|13||26||Shobayashi International Patent &Trademark Office||View|
|14||25||In-house patent attorney||－|
|16||24||Fukami Patent Office, P.C.||View|
|17||24||Hiraki & Associates||View|
|18||22||IP Firm SHUWA||View|
|19||21||NAKAO & ASSOCIATES||View|
|20||18||Sanno Patent Office||View|