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 2019 (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).
RankingNo.IP law firmWebsite
196Sakai International Patent Office View
262SHIGA International Patent Office View
349TAIYO, NAKAJIMA & KATO View
443ITOH International Patent Office View
537AIWA International Patent Agency View
633Shobayashi International Patent &Trademark Office View
729SEIWA PATENT & LAW View
825NAKAO & ASSOCIATES View
923TMI Associates View
1020ONDA TECHNO Intl. Patent Attys View
1119Nakamura & Partners View
1215Isono International Patent Office, P. C. View
1315S. SOGA & CO. View
1414SUZUYE & SUZUYE Intellectual Property Law View
1514International Patent Office Minoru View
In preparing the table, a patent search expert conducted a patent search using patent classification and keywords (as necessary) in order to extract patents in specific technical field (here, AI field).
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.

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