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 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).
RankingNo.IP law firmWebsite
133ITOH International Patent Office View
225SUZUYE & SUZUYE Intellectual Property Law View
322Kyoritsu Institute View
420Sakai International Patent Office View
515Misawa Patent, p.c. View
613SHIGA International Patent Office View
711Shobayashi International Patent &Trademark Office View
811TMI Associates View
910Nakamura & Partners View
1010Washida & Associates View
1110Ohtsuka Patent Office View
129Nishijin Patent FirmNone
149Shin-Ei Patent Firm, P.C. 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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