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

  • Technical field:  RNAi and/or miRNA (pharmaceutical composition containing siRNA, shRNA or miRNA, and biomarker containing miRNA, 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
113Hiraki & Associates View
210SHIGA International Patent Office View
310SHUSAKU・YAMAMOTO View
49Shimizu Patent Office View
57Aoyama & Partners View
67Kuzuwa & Partners View
76Takaoka IP Law View
86Abe, Ikubo & Katayama View
94Anderson Mori & Tomotsune 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, RNAi/miRNA 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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