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

2020.04.10 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: 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	Website
1	1208	Sakai International Patent Office	View
2	584	ITOH International Patent Office	View
3	452	SHIGA International Patent Office	View
4	379	Ohtsuka Patent Office	View
5	303	In-house patent attorney	－
6	292	In-house patent attorney	－
7	268	TAIYO, NAKAJIMA & KATO	View
8	220	TMI Associates	View
9	178	SUZUYE & SUZUYE Intellectual Property Law	View
10	160	KOKUBUN INTERNATIONAL PATENTS & TRADEMARKS	View
11	151	In-house patent attorney	－
12	146	Asahi Patent Firm	View
13	141	HIBIKI IP LAW FIRM	View
14	128	Osuga & Associates	View
15	126	S & S INTERNATIONAL PPC	View
16	125	Shobayashi International Patent &Trademark Office	View
17	124	YKI Intellectual Property Attorneys	View
18	123	HARAKENZO WORLD PATENT & TRADEMARK	View
19	117	Isono International Patent Office, P. C.	View
20	114	SOCO IP LAW FIRM	View
21	110	IP Firm SHUWA	View
22	109	Haruka Patent & Trademark Attorneys	View
23	108	MIZOI INTERNATIONAL PATENT FIRM	N/A
24	107	Soei Patent & Law Firm	View
25	106	TANI & ABE, p.c.	View
26	105	A.SAKAI & ASSOCIATES	View
27	104	Miyoshi & Miyoshi	View
28	102	ONDA TECHNO Intl. Patent Attys	View
29	101	Koyo International Patent Firm	View
30	100	Nagoya International Patent Firm	View
31	99	SEIWA PATENT & LAW	View
32	92	Fukami Patent Office, P.C.	View
33	89	Minami Aoyama Patent and Trademark Attorneys	View
34	85	Hattori & Associates	View
35	85	PRIMEWORKS IP Attorneys	View
36	85	KOHNO & KOHNO	View
37	85	Isshiki & Co.	View
38	83	Patent Attorney's Office Yoshida, Yoshitake and Arita	View
39	82	SUGIMURA & Partners	View
40	80	KYOWA PATENT AND LAW OFFICE	View
41	79	Aoyama & Partners	View
42	76	TOU-OU PATENT FIRM	View
43	75	Suzaku IP Attorneys	View
44	75	IRD Patent Office	View
45	74	Willfort International Patent Firm	View
46	74	Seiryo Intellectual Property Corp.	View
47	72	IP seed Patent Firm	View
48	68	Ashida & Kimura	View
49	66	In-house patent attorney	－
50	66	TSUTSUI & 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, 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.