The following table shows the ranking of Japanese IP law firm. The ranking is based on the following conditions.
- Technical field: Biotechnology (Protein, amino acid, DNA, RNA, Recombinant DNA, antibody, peputide, iPS cell, ES cell, vaccine, 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).
|Ranking||No.||IP law firm||Website|
|2||333||SHIGA International Patent Office||View|
|3||326||Hiraki & Associates||View|
|4||323||Shimizu Patent Office||View|
|5||312||Aoyama & Partners||View|
|6||266||Abe, Ikubo & Katayama||View|
|7||247||SEIWA PATENT & LAW||View|
|8||210||Nakamura & Partners||View|
|9||208||YUASA AND HARA||View|
|10||143||Soei Patent & Law Firm||View|
|11||133||SAEGUSA & Partners||View|
|12||128||Kuzuwa & Partners||View|
|13||123||KAWAGUTI & PARTNERS||View|
|14||106||Takaoka IP Law||View|
|15||104||SUBARU PATENT OFFICE||View|
|16||101||Sonoda & Kobayashi||View|
|17||98||KYOWA PATENT AND LAW OFFICE||View|
|18||98||Takashima International Patent Office||View|
|19||93||TSUKUNI & ASSOCIATES||View|
|20||90||The Patent Corporate Body Aruga Patent Office||View|
|22||74||SIKs & Co.||View|
|23||74||Anderson Mori & Tomotsune||View|
|24||71||Hirota & Associates||View|
|25||67||ONDA TECHNO Intl. Patent Attys||View|
|26||65||IP Firm SHUWA||View|
|27||64||Asamura Patent Office, p.c.||View|
|28||62||OHNO & PARTNERS||View|
|29||59||ITOH International Patent Office||View|
|30||55||Orion Patent Office||View|
|31||55||Okuyama & Sasajima||View|
|32||54||SUZUYE & SUZUYE Intellectual Property Law||View|
|33||54||Shobayashi International Patent &Trademark Office||View|
|34||50||SUGIMURA & Partners||View|
|35||50||HARAKENZO WORLD PATENT & TRADEMARK||View|
|36||49||Hirota, Nagare & Associates||View|
|37||49||TAIYO, NAKAJIMA & KATO||View|
|38||45||Sonderhoff & Einsel||View|
|39||44||Kita-Aoyama International Patent Bureau||View|
|40||42||SK Intellectual Property Law Firm||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.