<2018-All> 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: 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	1153	ITOH International Patent Office	View
2	1145	Sakai International Patent Office	View
3	1065	SHIGA International Patent Office	View
4	539	Ohtsuka Patent Office	View
5	394	SUZUYE & SUZUYE Intellectual Property Law	View
6	388	In-house patent attorney	－
7	287	ONDA TECHNO Intl. Patent Attys	View
8	279	TMI Associates	View
9	278	Fukami Patent Office, P.C.	View
10	278	In-house patent attorney	－
11	270	TAIYO, NAKAJIMA & KATO	View
12	268	RYUKA IP LAW FIRM	View
13	227	TANI & ABE, p.c.	View
14	213	SEIWA PATENT & LAW	View
15	200	Hazuki International	View
16	193	KOKUBUN INTERNATIONAL PATENTS & TRADEMARKS	View
17	184	SUGIMURA & Partners	View
18	162	Osuga & Associates	View
19	153	Soei Patent & Law Firm	View
20	152	Asahi Patent Firm	View
21	150	MIZOI INTERNATIONAL PATENT FIRM	None
22	148	Shobayashi International Patent &Trademark Office	View
23	148	HIBIKI IP LAW FIRM	View
24	147	SHUSAKU・YAMAMOTO	View
25	142	Miyoshi & Miyoshi	View
26	140	HARAKENZO WORLD PATENT & TRADEMARK	View
27	133	Nakamura & Partners	View
28	131	PRIMEWORKS IP Attorneys	View
29	131	Isono International Patent Office, P. C.	View
30	130	S & S INTERNATIONAL PPC	View
31	128	Haruka Patent & Trademark Attorneys	View
32	126	Nagoya International Patent Firm	View
33	123	YUASA AND HARA	View
34	116	Minami Aoyama Patent and Trademark Attorneys	View
35	114	KYOWA PATENT AND LAW OFFICE	View
36	114	Aoyama & Partners	View
37	111	IP Firm SHUWA	View
38	109	YKI Intellectual Property Attorneys	View
39	107	Hattori & Associates	View
40	106	KOHNO & KOHNO	View
41	103	Koyo International Patent Firm	View
42	103	Hiraki & Associates	View
43	101	Isshiki & Co.	View
44	99	In-house patent attorney	－
45	98	Patent Attorney's Office Yoshida, Yoshitake and Arita	View
46	97	Sonderhoff & Einsel	View
47	90	In-house patent attorney	－
48	90	Ashida & Kimura	View
49	88	CHUO INTERNATIONAL PATENT FIRM	View
50	87	TOU-OU PATENT FIRM	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.