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

2022.10.10 2022.10.15

The following table shows the ranking of Japanese IP law firm. The ranking is based on the following conditions.

Technical field: Pharmaceutical (pharmaceutical composition, medicine, API, production method of thereof, 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	541	SHUSAKU・YAMAMOTO	View
2	401	Aoyama & Partners	View
3	354	Shimizu Patent Office	View
4	338	SHIGA International Patent Office	View
5	269	Abe, Ikubo & Katayama	View
6	243	Hiraki & Associates	View
7	218	SEIWA PATENT & LAW	View
8	209	YUASA AND HARA	View
9	177	SAEGUSA & Partners	View
10	164	Nakamura & Partners	View
11	163	TSUKUNI & ASSOCIATES	View
12	142	Sonoda & Kobayashi	View
13	134	Soei Patent & Law Firm	View
14	129	Takashima International Patent Office	View
15	120	Kuzuwa & Partners	View
16	119	SUBARU PATENT OFFICE	View
17	111	Anderson Mori & Tomotsune	View
18	98	KAWAGUTI & PARTNERS	View
19	93	Takaoka IP Law	View
20	86	Asamura Patent Office, p.c.	View
21	75	The Patent Corporate Body Aruga Patent Office	View
22	74	TMI Associates	View
23	69	Orion Patent Office	View
24	69	KIYOHARA & CO.,PATENT ATTORNEYS	View
25	69	KYOWA PATENT AND LAW OFFICE	View
26	61	HARAKENZO WORLD PATENT & TRADEMARK	View
27	60	OHNO & PARTNERS	View
28	60	Hirota & Associates	View
29	60	LEXIA PARTNERS	View
30	57	IP Firm SHUWA	View
31	56	ONDA TECHNO Intl. Patent Attys	View
32	54	Unius Patent Attorneys Office	View
33	53	SIKs & Co.	View
34	52	YuNeed International Patent Office	View
35	52	Hirota, Nagare & Associates	View
36	49	Iwatani Patent Office	View
37	48	SUGIMURA & Partners	View
38	47	Shobayashi International Patent &Trademark Office	View
39	41	Ashida & Kimura	View
40	41	HOSODA INTERNATIONAL PATENT OFFICE	View
41	41	Nagoya International Patent Firm	View
42	38	SUZUYE & SUZUYE Intellectual Property Law	View
43	36	Ochanomizu International Patent Office	View
44	34	Yoshikawa International Patent Office	View
45	33	HIROE AND ASSOCIATES, patent professional corporation	View
46	33	In-house patent attorney	－
47	31	SK Intellectual Property Law Firm	View
48	31	TAIYO, NAKAJIMA & KATO	View
49	30	Kita-Aoyama International Patent Bureau	View
50	29	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, Pharmaceutical 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.