<2018-JP> Firm Ranking of the number of Japanese granted patents in the IT field in 2018

2019-03-21 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 2018 (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	1131	Sakai International Patent Office	View
2	600	ITOH International Patent Office	View
3	495	SHIGA International Patent Office	View
4	406	Ohtsuka Patent Office	View
5	384	In-house patent attorney	－
6	276	In-house patent attorney	－
7	233	SUZUYE & SUZUYE Intellectual Property Law	View
8	212	TAIYO, NAKAJIMA & KATO	View
9	193	KOKUBUN INTERNATIONAL PATENTS & TRADEMARKS	View
10	184	Hazuki International	View
11	165	TMI Associates	View
12	152	Asahi Patent Firm	View
13	150	MIZOI INTERNATIONAL PATENT FIRM	None
14	139	Osuga & Associates	View
15	130	Shobayashi International Patent &Trademark Office	View
16	129	HARAKENZO WORLD PATENT & TRADEMARK	View
17	126	Fukami Patent Office, P.C.	View
18	122	SUGIMURA & Partners	View
19	121	S & S INTERNATIONAL PPC	View
20	119	Nagoya International Patent Firm	View
21	119	Haruka Patent & Trademark Attorneys	View
22	117	TANI & ABE, p.c.	View
23	115	Miyoshi & Miyoshi	View
24	112	Isono International Patent Office, P. C.	View
25	111	HIBIKI IP LAW FIRM	View
26	110	SEIWA PATENT & LAW	View
27	105	Soei Patent & Law Firm	View
28	105	Hattori & Associates	View
29	104	Minami Aoyama Patent and Trademark Attorneys	View
30	103	ONDA TECHNO Intl. Patent Attys	View
31	100	PRIMEWORKS IP Attorneys	View
32	98	Koyo International Patent Firm	View
33	97	Patent Attorney's Office Yoshida, Yoshitake and Arita	View
34	96	KOHNO & KOHNO	View
35	93	IP Firm SHUWA	View
36	93	KYOWA PATENT AND LAW OFFICE	View
37	93	Isshiki & Co.	View
38	91	YKI Intellectual Property Attorneys	View
39	89	In-house patent attorney	－
40	88	CHUO INTERNATIONAL PATENT FIRM	View
41	85	TOU-OU PATENT FIRM	View
42	84	Ashida & Kimura	View
43	84	Sanno Patent Office	View
44	82	A.SAKAI & ASSOCIATES	View
45	80	Hori & Partners	View
46	75	IRD Patent Office	View
47	74	Haraguchi Internatinal Patent Office	View
48	72	In-house patent attorney	－
49	71	Willfort International Patent Firm	View
50	70	Seiryo Intellectual Property Corp.	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.