<2021-All>  Firm Ranking of the number of Japanese granted patents in the Biotechnology field in 2021

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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 2021 (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 Web
1 399 SHUSAKU・YAMAMOTO View
2 309 Shimizu Patent Office View
3 259 Hiraki & Associates View
4 248 SHIGA International Patent Office View
5 210 Aoyama & Partners View
6 186 SEIWA PATENT & LAW View
7 175 Abe, Ikubo & Katayama View
8 132 YUASA AND HARA View
9 109 Sonoda & Kobayashi View
10 100 SAEGUSA & Partners View
11 97 Takashima International Patent Office View
12 88 Nakamura & Partners View
13 87 Soei Patent & Law Firm View
14 80 TSUKUNI & ASSOCIATES View
15 79 SUBARU PATENT OFFICE View
16 73 Takaoka IP Law View
17 72 Anderson Mori & Tomotsune View
18 69 Kuzuwa & Partners View
19 69 TMI Associates View
20 58 HARAKENZO WORLD PATENT & TRADEMARK View
21 57 SIKs & Co. View
22 52 OHNO & PARTNERS View
23 52 KAWAGUTI & PARTNERS View
24 52 Asamura Patent Office, p.c. View
25 51 YuNeed International Patent Office View
26 49 The Patent Corporate Body Aruga Patent Office View
27 46 ONDA TECHNO Intl. Patent Attys View
28 45 IP Firm SHUWA View
29 43 Hirota & Associates View
30 41 Orion Patent Office View
31 41 TAIYO, NAKAJIMA & KATO View
32 39 SUGIMURA & Partners View
33 39 KYOWA PATENT AND LAW OFFICE View
34 38 Hirota, Nagare & Associates View
35 32 Unius Patent Attorneys Office View
36 32 Shobayashi International Patent &Trademark Office View
37 32 KIYOHARA & CO.,PATENT ATTORNEYS View
38 31 Iwatani Patent Office View
39 31 Okuyama & Sasajima View
40 29 Tanigawa and Associates N/A
41 28 YASUTOMI & Associates View
42 27 Kita-Aoyama International Patent Bureau View
43 27 SK Intellectual Property Law Firm View
44 23 HATTA & ASSOCIATES View
45 23 Morita & Yamaguchi International Patent Office View
46 22 Ashida & Kimura View
47 22 Yoshikawa International Patent Office View
48 21 In-house patent attorney
49 21 NOGAWA PATENT OFFICE View
50 19 Fukami Patent Office, P.C. 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, Biotechnology 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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