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

2022.09.19 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: 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	Website
1	1604	Sakai International Patent Office	View
2	1297	SHIGA International Patent Office	View
3	942	ITOH International Patent Office	View
4	444	Ohtsuka Patent Office	View
5	382	TMI Associates	View
6	380	SUZUYE & SUZUYE Intellectual Property Law	View
7	373	TAIYO, NAKAJIMA & KATO	View
8	365	Fukami Patent Office, P.C.	View
9	322	SOCO IP LAW FIRM	View
10	278	In-house patent attorney	－
11	216	TANI & ABE, p.c.	View
12	208	SEIWA PATENT & LAW	View
13	206	In-house patent attorney	－
14	196	HIBIKI IP LAW FIRM	View
15	174	SHUSAKU・YAMAMOTO	View
16	173	RYUKA IP LAW FIRM	View
17	166	KOHNO & KOHNO	View
18	157	Asahi Patent Firm	View
19	154	YKI Intellectual Property Attorneys	View
20	152	SUGIMURA & Partners	View
21	151	PRIMEWORKS IP Attorneys	View
22	149	IP Firm SHUWA	View
23	148	Shobayashi International Patent &Trademark Office	View
24	148	ONDA TECHNO Intl. Patent Attys	View
25	145	KOKUBUN INTERNATIONAL PATENTS & TRADEMARKS	View
26	136	Nakamura & Partners	View
27	134	HARAKENZO WORLD PATENT & TRADEMARK	View
28	133	NII Patent Firm	View
29	130	Koyo International Patent Firm	View
30	125	MIZOI INTERNATIONAL PATENT FIRM	N/A
31	122	KYOWA PATENT AND LAW OFFICE	View
32	119	Suzaku IP Attorneys	View
33	118	SUNNEXT International Patent Office	View
34	117	Soei Patent & Law Firm	View
35	115	Serio Patent & Trademark Attorneys	View
36	113	Seiryo Intellectual Property Corp.	View
37	112	Prezio IP Firm	View
38	109	TOU-OU PATENT FIRM	View
39	106	S & S INTERNATIONAL PPC	View
40	104	One ip	View
41	104	Fuso Patent Firm	View
42	104	Nishikawa & Associates	View
43	103	Isono International Patent Office, P. C.	View
44	102	Nagoya International Patent Firm	View
45	101	Asamura Patent Office, p.c.	View
46	100	In-house patent attorney	－
47	98	IPTech	View
48	98	SUNRISE PATENT OFFICE	View
49	96	INFORT PATENT FIRM	View
50	96	Okabe International Patent Office	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.