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

2022.10.08 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: 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	Web
1	136	Hiraki & Associates	View
2	60	SHIGA International Patent Office	View
3	54	SAEGUSA & Partners	View
4	49	Takashima International Patent Office	View
5	47	SEIWA PATENT & LAW	View
6	42	SIKs & Co.	View
7	40	The Patent Corporate Body Aruga Patent Office	View
8	39	Aoyama & Partners	View
9	39	Shimizu Patent Office	View
10	33	IP Firm SHUWA	View
11	29	OHNO & PARTNERS	View
12	29	Abe, Ikubo & Katayama	View
13	24	SHUSAKU・YAMAMOTO	View
14	24	YASUTOMI & Associates	View
15	23	Tanigawa and Associates	N/A
16	21	Soei Patent & Law Firm	View
17	21	TMI Associates	View
18	20	YUASA AND HARA	View
19	20	HARAKENZO WORLD PATENT & TRADEMARK	View
20	19	YuNeed International Patent Office	View
21	17	TAIYO, NAKAJIMA & KATO	View
22	17	Iwatani Patent Office	View
23	16	CENTCREST IP Attorneys	View
24	15	Hirota & Associates	View
25	14	Shobayashi International Patent &Trademark Office	View
26	12	Ashida & Kimura	View
27	12	Eikoh Patent Firm, P.C.	View
28	12	Moegi Patent Office	View
29	12	Kuzuwa & Partners	View
30	12	HATTA & ASSOCIATES	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.