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

2019-01-03 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: 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	1257	Sakai International Patent Office	View
2	1157	ITOH International Patent Office	View
3	1095	SHIGA International Patent Office	View
4	482	Ohtsuka Patent Office	View
5	393	SUZUYE & SUZUYE Intellectual Property Law	View
6	294	In-house patent attorney	－
7	268	Fukami Patent Office, P.C.	View
8	262	TMI Associates	View
9	259	TAIYO, NAKAJIMA & KATO	View
10	257	In-house patent attorney	－
11	252	ONDA TECHNO Intl. Patent Attys	View
12	236	RYUKA IP LAW FIRM	View
13	227	TANI & ABE, p.c.	View
14	218	Osuga & Associates	View
15	215	HIBIKI IP LAW FIRM	View
16	200	Hazuki International	View
17	193	SEIWA PATENT & LAW	View
18	191	Miyoshi & Miyoshi	View
19	188	SUGIMURA & Partners	View
20	182	YUASA AND HARA	View
21	169	KOKUBUN INTERNATIONAL PATENTS & TRADEMARKS	View
22	165	Nakamura & Partners	View
23	154	Soei Patent & Law Firm	View
24	150	Haruka Patent & Trademark Attorneys	View
25	141	In-house patent attorney	－
26	141	MIZOI INTERNATIONAL PATENT FIRM	None
27	139	Shobayashi International Patent &Trademark Office	View
28	139	HARAKENZO WORLD PATENT & TRADEMARK	View
29	134	Hattori & Associates	View
30	132	YKI Intellectual Property Attorneys	View
31	129	Aoyama & Partners	View
32	126	SHUSAKU・YAMAMOTO	View
33	123	Asahi Patent Firm	View
34	109	Seiryo Intellectual Property Corp.	View
35	108	Isono International Patent Office, P. C.	View
36	106	PRIMEWORKS IP Attorneys	View
37	106	KYOWA PATENT AND LAW OFFICE	View
38	105	Koyo International Patent Firm	View
39	105	Patent Attorney's Office Yoshida, Yoshitake and Arita	View
40	102	Willfort International Patent Firm	View
41	100	A.SAKAI & ASSOCIATES	View
42	97	Nagoya International Patent Firm	View
43	97	S & S INTERNATIONAL PPC	View
44	95	In-house patent attorney	－
45	94	Takahashi Hayashi and Partner Patent Attorneys inc.	View
46	93	In-house patent attorney	－
47	93	Hiraki & Associates	View
48	90	Sonderhoff & Einsel	View
49	87	TOU-OU PATENT FIRM	View
50	86	Ashida & Kimura	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.