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 2017 (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
188SHIGA International Patent Office View
283Sakai International Patent Office View
372ITOH International Patent Office View
447SUZUYE & SUZUYE Intellectual Property Law View
546ONDA TECHNO Intl. Patent Attys View
640SEIWA PATENT & LAW View
735TAIYO, NAKAJIMA & KATO View
830RYUKA IP LAW FIRM View
929Ohtsuka Patent Office View
1025NAKAO & ASSOCIATES View
1124TMI Associates View
1220In-house patent attorney
1320Soei Patent & Law Firm View
1420SHUSAKU・YAMAMOTO View
1518Nakamura & Partners View
1617Hiraki & Associates View
1716SUGIMURA & Partners View
1816Miyoshi & Miyoshi View
1916YUASA AND HARA View
2015Haruka Patent & Trademark Attorneys 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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