<2021-Foreign> Firm Ranking of the number of Japanese granted patents in the IT field in 2021

2022-09-21 2022-09-20

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

Technical field: IT (information technology, computer Software, computer program, method using software, etc.)
Status: Japanese granted patents in 2021 (registration date).
First country: Foreign (i.e., patents with claiming priority of a foreign application, or patents based on PCT application whose receiving office is not 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	Website
1	595	SHIGA International Patent Office	View
2	387	ITOH International Patent Office	View
3	177	Fukami Patent Office, P.C.	View
4	163	SHUSAKU・YAMAMOTO	View
5	153	TMI Associates	View
6	133	Ohtsuka Patent Office	View
7	112	Nakamura & Partners	View
8	108	TANI & ABE, p.c.	View
9	98	SEIWA PATENT & LAW	View
10	95	Asamura Patent Office, p.c.	View
11	94	RYUKA IP LAW FIRM	View
12	87	In-house patent attorney	－
13	78	YUASA AND HARA	View
14	74	Sonderhoff & Einsel	View
15	70	SUGIMURA & Partners	View
16	60	Sonoda & Kobayashi	View
17	60	Kyosei International Patent Office	View
18	58	SUZUYE & SUZUYE Intellectual Property Law	View
19	56	SANSUI PATENT FIRM	View
20	52	TAIYO, NAKAJIMA & KATO	View
21	51	MAEDA & PARTNERS	View
22	50	KYOWA PATENT AND LAW OFFICE	View
23	49	ONDA TECHNO Intl. Patent Attys	View
24	48	TRY International IP LAW FIRM	View
25	44	PRIMEWORKS IP Attorneys	View
26	44	Aoyama & Partners	View
27	44	Olive International Patent Office	View
28	35	Tsubame Patent Attorney Firm	View
29	34	CP JAPAN IP Attorneys	View
30	34	Shinjyu GLOBAL IP	View
31	32	In-house patent attorney	－
32	32	Shobayashi International Patent &Trademark Office	View
33	31	Okabe International Patent Office	View
34	31	IPWIN	N/A
35	30	S. SOGA & CO.	View
36	29	World IP Law	View
37	28	TSUKUNI & ASSOCIATES	View
38	27	Yamakawa International Patent Office	View
39	26	Miyoshi & Miyoshi	View
40	26	HIROE AND ASSOCIATES, patent professional corporation	View
41	25	Washida & Associates	View
42	25	INFORT PATENT FIRM	View
43	24	Soei Patent & Law Firm	View
44	23	Yoshikawa International Patent Office	View
45	23	KOHNO & KOHNO	View
46	22	Sakai International Patent Office	View
47	21	Unius Patent Attorneys Office	View
48	21	M&S Partners	View
49	21	Takahashi Hayashi and Partner Patent Attorneys inc.	View
50	19	KAWAGUTI & PARTNERS	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, IT 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.