<2018-All> Firm Ranking of the number of Japanese granted patents in the Electronic circuit field in 2018

2019-03-03 2019-04-28

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

Technical field: Electronic circuit (electronic circuit device/component, semiconductor integrated circuit, 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	80	SHIGA International Patent Office	View
2	79	SUZUYE & SUZUYE Intellectual Property Law	View
3	76	KATAYAMA & PARTNERS	View
4	69	ITOH International Patent Office	View
5	44	Fukami Patent Office, P.C.	View
6	44	Sanno Patent Office	View
7	43	Miyazaki & Metsugi	View
8	39	SEIWA PATENT & LAW	View
9	38	In-house patent attorney	－
10	37	Kaede Patent Attorneys' Office	View
11	36	Sakai International Patent Office	View
12	34	RYUKA IP LAW FIRM	View
13	31	ASAHI & MASUDA PATENT & TRADEMARK ATTORNEYS	View
14	30	TMI Associates	View
15	30	I.F. PARTNERS Patent Attorneys	View
16	27	Miyoshi & Miyoshi	View
17	27	ONDA TECHNO Intl. Patent Attys	View
18	27	Sonderhoff & Einsel	View
19	26	Sato International Patent Firm	View
20	26	PRIMEWORKS IP Attorneys	View
21	26	Nakajima & Associates IP Firm	View
22	25	Yamakawa International Patent Office	View
23	24	In-house patent attorney	－
24	23	Sohshin International Patent Office	View
25	22	HIBIKI IP LAW FIRM	View
26	22	KYOWA PATENT AND LAW OFFICE	View
27	20	SUGIMURA & Partners	View
28	20	Katayose Patent	View
29	20	KOKUBUN INTERNATIONAL PATENTS & TRADEMARKS	View
30	20	S. SOGA & CO.	View
31	19	Sano Patent Office	View
32	19	Washida & Associates	View
33	19	Aoyama & Partners	View
34	17	TAIYO, NAKAJIMA & KATO	View
35	16	Soei Patent & Law Firm	View
36	16	In-house patent attorney	－
37	16	Patent Attorney's Office Yoshida, Yoshitake and Arita	View
38	16	Nishikawa & Associates	View
39	15	SHUSAKU・YAMAMOTO	View
40	15	TAKADA, TAKAHASHI & PARTNERS	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.