The following table shows the ranking of Japanese IP law firm. The ranking is based on the following conditions.
- Technical field: Hybrid car (Hybrid car technology having broad facet classification: control device, power supply system, electric power conversion device for hybrid vehicle, etc.)
- Status: Japanese granted patents in 2018 (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).
|Ranking||No.||IP law firm||Website|
|1||76||Fukami Patent Office, P.C.||View|
|2||58||ITEC International Patent Firm||View|
|3||45||CREO Law & Intellectual Property||View|
|4||30||Tokyo Central Patent Firm||View|
|5||28||Watanabe International Patent Office||View|
|6||25||Ikeda Patent Office||View|
|7||20||NISSAY INTERNATIONAL PATENT OFFICE||View|
|8||20||Ayata Patent Firm||None|
|9||19||AICHI, Takahashi, Iwakura & Associates||View|
|10||19||Seiryu International Patent Firm||None|
|11||17||GOTOH & PARTNERS||View|
|12||16||R&C IP Law Firm||View|
|13||16||In-house patent attorney||－|
|14||15||AIGI Intellectual Property Law Firm||View|
|16||14||YKI Intellectual Property Attorneys||View|
|17||14||Koh-Ei Patent Firm, P.C.||View|
|18||13||Prospec Patents & Trademarks||View|
|19||13||Shinjyu GLOBAL IP||View|
|20||13||S. SOGA & CO.||View|
|21||12||Sanada & Associates||View|
|22||12||ONDA TECHNO Intl. Patent Attys||View|
|23||12||Toho International Patent & Law Office||View|
|24||12||MAEDA & PARTNERS||View|
|25||11||TSUTSUI & ASSOCIATES||View|
|26||11||SUNNEXT International Patent Office||View|
|27||10||HATTORI & PARTNERS||View|
|28||9||Sankyo International Patent Attorneys Office||View|
|29||9||Sakai International Patent Office||View|
|30||9||ITOH International Patent Office||View|
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.