<2019-All> Firm Ranking of the number of Japanese granted patents in the IT field in 2019

2020-04-09 2020-04-06

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 2019 (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	1246	Sakai International Patent Office	View
2	965	ITOH International Patent Office	View
3	880	SHIGA International Patent Office	View
4	534	Ohtsuka Patent Office	View
5	355	TMI Associates	View
6	318	TAIYO, NAKAJIMA & KATO	View
7	308	In-house patent attorney	－
8	296	Fukami Patent Office, P.C.	View
9	294	In-house patent attorney	－
10	269	SUZUYE & SUZUYE Intellectual Property Law	View
11	213	TANI & ABE, p.c.	View
12	193	SEIWA PATENT & LAW	View
13	190	ONDA TECHNO Intl. Patent Attys	View
14	183	RYUKA IP LAW FIRM	View
15	161	KOKUBUN INTERNATIONAL PATENTS & TRADEMARKS	View
16	158	HIBIKI IP LAW FIRM	View
17	158	Miyoshi & Miyoshi	View
18	154	SUGIMURA & Partners	View
19	151	In-house patent attorney	－
20	146	Asahi Patent Firm	View
21	144	Shobayashi International Patent &Trademark Office	View
22	143	Soei Patent & Law Firm	View
23	143	Nakamura & Partners	View
24	139	Osuga & Associates	View
25	138	YKI Intellectual Property Attorneys	View
26	138	SHUSAKU・YAMAMOTO	View
27	136	S & S INTERNATIONAL PPC	View
28	134	HARAKENZO WORLD PATENT & TRADEMARK	View
29	127	Aoyama & Partners	View
30	124	Isono International Patent Office, P. C.	View
31	120	SOCO IP LAW FIRM	View
32	116	PRIMEWORKS IP Attorneys	View
33	114	Haruka Patent & Trademark Attorneys	View
34	113	IP Firm SHUWA	View
35	112	YUASA AND HARA	View
36	111	Nagoya International Patent Firm	View
37	108	MIZOI INTERNATIONAL PATENT FIRM	N/A
38	106	Minami Aoyama Patent and Trademark Attorneys	View
39	105	A.SAKAI & ASSOCIATES	View
40	104	KYOWA PATENT AND LAW OFFICE	View
41	103	Koyo International Patent Firm	View
42	99	KOHNO & KOHNO	View
43	90	Sonoda & Kobayashi	View
44	89	Isshiki & Co.	View
45	87	Ashida & Kimura	View
46	85	Hattori & Associates	View
47	84	Patent Attorney's Office Yoshida, Yoshitake and Arita	View
48	77	TOU-OU PATENT FIRM	View
49	76	Sonderhoff & Einsel	View
50	75	Suzaku IP Attorneys	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.