<2017-JP> Firm Ranking of the number of Japanese granted patents in the IT field in 2017

2019-01-14 2019-04-28

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 2017 (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	1247	Sakai International Patent Office	View
2	573	ITOH International Patent Office	View
3	544	SHIGA International Patent Office	View
4	339	Ohtsuka Patent Office	View
5	294	In-house patent attorney	－
6	257	In-house patent attorney	－
7	208	SUZUYE & SUZUYE Intellectual Property Law	View
8	196	TAIYO, NAKAJIMA & KATO	View
9	180	Hazuki International	View
10	177	Osuga & Associates	View
11	171	TMI Associates	View
12	169	KOKUBUN INTERNATIONAL PATENTS & TRADEMARKS	View
13	161	Miyoshi & Miyoshi	View
14	148	Fukami Patent Office, P.C.	View
15	144	Haruka Patent & Trademark Attorneys	View
16	141	MIZOI INTERNATIONAL PATENT FIRM	None
17	134	Hattori & Associates	View
18	130	SUGIMURA & Partners	View
19	128	TANI & ABE, p.c.	View
20	124	Shobayashi International Patent &Trademark Office	View
21	123	Asahi Patent Firm	View
22	118	HARAKENZO WORLD PATENT & TRADEMARK	View
23	112	YKI Intellectual Property Attorneys	View
24	112	HIBIKI IP LAW FIRM	View
25	111	Soei Patent & Law Firm	View
26	107	SEIWA PATENT & LAW	View
27	106	Seiryo Intellectual Property Corp.	View
28	105	Patent Attorney's Office Yoshida, Yoshitake and Arita	View
29	100	A.SAKAI & ASSOCIATES	View
30	99	Isono International Patent Office, P. C.	View
31	96	S & S INTERNATIONAL PPC	View
32	95	In-house patent attorney	－
33	95	Koyo International Patent Firm	View
34	92	Willfort International Patent Firm	View
35	89	In-house patent attorney	－
36	89	Nagoya International Patent Firm	View
37	88	KYOWA PATENT AND LAW OFFICE	View
38	87	PRIMEWORKS IP Attorneys	View
39	84	TOU-OU PATENT FIRM	View
40	83	Kaede Patent Attorneys' Office	View
41	83	CHUO INTERNATIONAL PATENT FIRM	View
42	80	ONDA TECHNO Intl. Patent Attys	View
43	76	TSUTSUI & ASSOCIATES	View
44	75	Sanada & Associates	View
45	74	KATAYAMA & PARTNERS	View
46	74	Ashida & Kimura	View
47	72	Sanno Patent Office	View
48	71	Minami Aoyama Patent and Trademark Attorneys	View
49	71	Isshiki & Co.	View
50	70	HARADA & 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.