The following table shows the ranking of Japanese IP law firm. The ranking is based on the following conditions.

  • Technical field:  Healthcare×IT (Healthcare informatics, Electronic health record, health monitoring system, etc.)
  • 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).
RankingNo.IP law firmWebsite
131Sakai International Patent Office View
231ITOH International Patent Office View
320SUZUYE & SUZUYE Intellectual Property Law View
512Misawa Patent, p.c. View
612Shobayashi International Patent &Trademark Office View
712SHIGA International Patent Office View
812Kyoritsu Institute View
98Tokyo International Parent Firm View
108ONDA TECHNO Intl. Patent Attys View
117Yanagida & Associates View
127PRIMEWORKS IP Attorneys View
137Kyoritsu Institute View
156Nakamura & Partners 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, Healthcare×IT 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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