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:  All (i.e., Japanese patent applications in 2016 (application date)).
  • First country:  All (i.e., patent applications with claiming priority of a Japanese application or a foreign application, or without claiming priority).
  • Count:  The number of Japanese patent applications handled by each Japanese IP law firm was counted (applicants of the patent applications are represented by each Japanese IP law firm or its members).
RankingNo.IP law firmWebsite
118Aoyama & Partners View
318Hiraki & Associates View
412Shimizu Patent Office View
511SHIGA International Patent Office View
610Abe, Ikubo & Katayama View
79Kuzuwa & Partners View
106Takaoka IP Law 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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