The following table shows the ranking of Japanese IP law firm. The ranking is based on the following conditions.
- Technical field: AI (artificial intelligence, machine learning, deep learning, etc.)
- Status: Japanese granted patents in 2021 (registration date).
- First country: Japan (i.e., (i) patents with claiming priority of a Japanese application, (ii) patents based on Japanese domestic application, or (iii) patents based on PCT application whose receiving office is Japan Patent Office without claiming any priority).
- Count: The number of patents handled by each Japanese IP law firm was counted (if the applicant is represented by a firm member, it was counted as being handled by the firm).
|Ranking||No.||IP law firm||Web|
|1||241||Sakai International Patent Office||View|
|2||109||SHIGA International Patent Office||View|
|3||47||TAIYO, NAKAJIMA & KATO||View|
|4||46||ITOH International Patent Office||View|
|6||38||SUNRISE PATENT OFFICE||View|
|7||38||SOCO IP LAW FIRM||View|
|8||38||International Patent Office Minoru||View|
|9||33||In-house patent attorney||－|
|10||30||Shobayashi International Patent &Trademark Office||View|
|11||29||TOU-OU PATENT FIRM||View|
|12||28||Fukami Patent Office, P.C.||View|
|13||25||AIWA International Patent Agency||View|
|14||24||NII Patent Firm||View|
|15||23||KOHNO & KOHNO||View|
|16||22||SUZUYE & SUZUYE Intellectual Property Law||View|
|17||22||NAKAO & ASSOCIATES||View|
|18||22||Seiryo Intellectual Property Corp.||View|
|20||21||Sanno Patent Attorneys Office||View|
|21||21||Kyushu International Patent Office||View|
|22||20||Hayahara Patent & Engineering||View|
|23||20||Ohtsuka Patent Office||View|
|24||20||Soei Patent & Law Firm||View|
|25||19||Isono International Patent Office, P. C.||View|
|27||18||Haruka Patent & Trademark Attorneys||View|
|28||18||Willfort International Patent Firm||View|
|29||18||BRIGHTAS IP ATTORNEYS||View|
|30||17||HIBIKI IP LAW FIRM||View|
In the patent search, it was confirmed that a high-accuracy population (i.e., a population not including non-relevant fields) of patents was obtained. Subsequently, the population was used to create the table.
By entering the Firm name or Attorney name in the "Legal Representative Name" column of Patentscope (search system of WIPO), you can find the patent information handled by each Firm.