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

2019-01-13 2019-04-28

The following table shows the ranking of Japanese IP law firm. The ranking is based on the following conditions.

Technical field: Electronic circuit (electronic circuit device/component, semiconductor integrated circuit, 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	83	SHIGA International Patent Office	View
2	80	SUZUYE & SUZUYE Intellectual Property Law	View
3	68	ITOH International Patent Office	View
4	45	In-house patent attorney	－
5	42	SEIWA PATENT & LAW	View
6	40	Fukami Patent Office, P.C.	View
7	40	Miyoshi & Miyoshi	View
8	34	TMI Associates	View
9	33	Nakajima & Associates IP Firm	View
10	33	KATAYAMA & PARTNERS	View
11	32	ASAHI & MASUDA PATENT & TRADEMARK ATTORNEYS	View
12	31	Sonderhoff & Einsel	View
13	28	Kaede Patent Attorneys' Office	View
14	26	Miyazaki & Metsugi	View
15	25	Sakai International Patent Office	View
16	25	Yamakawa International Patent Office	View
17	23	S. SOGA & CO.	View
18	22	Sanno Patent Office	View
19	22	I.F. PARTNERS Patent Attorneys	View
20	21	In-house patent attorney	－
21	21	HIBIKI IP LAW FIRM	View
22	20	ONDA TECHNO Intl. Patent Attys	View
23	20	Katayose Patent	View
24	17	In-house patent attorney	－
25	16	Sato International Patent Firm	View
26	16	TAIYO, NAKAJIMA & KATO	View
27	15	Patent Attorney's Office Yoshida, Yoshitake and Arita	View
28	15	Washida & Associates	View
29	14	KYOWA PATENT AND LAW OFFICE	View
30	14	CHUBU PATENT OFFICE	View
31	14	Hattori & Associates	View
32	14	Aoyama & Partners	View
33	13	KOKUBUN INTERNATIONAL PATENTS & TRADEMARKS	View
34	13	RYUKA IP LAW FIRM	View
35	12	Sano Patent Office	View
36	12	WAKABAYASHI PATENT AGENCY	View
37	12	PRIMEWORKS IP Attorneys	View
38	11	TAKADA, TAKAHASHI & PARTNERS	View
39	11	Nagoya International Patent Firm	View
40	11	NII 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, electronic circuit 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.