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

2022.10.07 2022.10.05

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.