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

  • Technical field:  Sound (digital audio processing, tuning device, speech processing, voice search, noise cancellation, microphone, piano, electronic instrument, etc.)
  • Status:  Japanese granted patents in 2019 (registration date).
  • First country:  Japan (i.e., (i) patents with claiming priority of a Japanese application, (ii) patents based on Japanese domestic application, or (iii) patents based on PCT application whose receiving office is Japan Patent Office without claiming any 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
186NAKAO & ASSOCIATES View
276Sakai International Patent Office View
342Osuga & Associates View
436OHCHI INTERNATIONAL IP View
534TAIYO, NAKAJIMA & KATO View
632SHIGA International Patent Office View
725Minami International Patent FirmN/A
824Kashima & Associates View
923Takahashi Hayashi and Partner Patent Attorneys inc. View
1022Isshiki & Co. View
1121ION PATENT View
1216Rise Patent Firm View
1316IP Firm SHUWA View
1416Nishikawa & Associates View
1515Yoshida & Wakabayashi IP Firm View
1615CHUO INTERNATIONAL PATENT FIRM View
1714HARAKENZO WORLD PATENT & TRADEMARK View
1813Nagoya International Patent Firm View
1912Fukami Patent Office, P.C. View
2012Isono International Patent Office, P. C. View
2112Matsumoto Patent FirmN/A
2212Sanno Patent Office View
2311NEXT International View
2411Ohtsuka Patent Office View
2511Sankyo International Patent Attorneys Office View
2611Seventh international patent firmN/A
2711Hozma Patent & TM Attorneys View
2810Prospec Patents & Trademarks View
2910Murakami Patent FirmN/A
3010SUZUYE & SUZUYE Intellectual Property 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, Sound 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.

Sponsored link
Recommended articles