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).
This time we searched and extracted patents that contain AI-related terms in the full text of the patents, then created the ranking.  Since the main search scope is the full text, the extracted population has less search omissions but can contain noise.  According to this ranking, you can understand rough trends about AI patents.
RankingNo.IP law firmWebsite
1111Sakai International Patent Office View
2110SHIGA International Patent Office View
379ITOH International Patent Office View
453SHUSAKU・YAMAMOTO View
552TAIYO, NAKAJIMA & KATO View
650ONDA TECHNO Intl. Patent Attys View
746SUZUYE & SUZUYE Intellectual Property Law View
845SEIWA PATENT & LAW View
935RYUKA IP LAW FIRM View
1033TMI Associates View
1129Ohtsuka Patent Office View
1227Soei Patent & Law Firm View
1326Shobayashi International Patent &Trademark Office View
1425In-house patent attorney
1524Hazuki International View
1624Fukami Patent Office, P.C. View
1724Hiraki & Associates View
1822IP Firm SHUWA View
1921NAKAO & ASSOCIATES View
2018Sanno Patent Office View
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.
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