<2019-All> Firm Ranking of the number of Japanese granted patents in the Electronic circuit field in 2019

2020-04-23 2020-04-19

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 2019 (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	77	SHIGA International Patent Office	View
2	54	ITOH International Patent Office	View
3	53	SUZUYE & SUZUYE Intellectual Property Law	View
4	50	KATAYAMA & PARTNERS	View
5	49	Sakai International Patent Office	View
6	41	Fukami Patent Office, P.C.	View
7	39	In-house patent attorney	－
8	39	Miyazaki & Metsugi	View
9	38	Sanno Patent Office	View
10	36	TMI Associates	View
11	33	KYOWA PATENT AND LAW OFFICE	View
12	33	SEIWA PATENT & LAW	View
13	31	NII Patent Firm	View
14	31	I.F. PARTNERS Patent Attorneys	View
15	29	Miyoshi & Miyoshi	View
16	28	Sato International Patent Firm	View
17	26	ASAHI & MASUDA PATENT & TRADEMARK ATTORNEYS	View
18	26	Yamakawa International Patent Office	View
19	26	Aoyama & Partners	View
20	24	In-house patent attorney	－
21	23	Sohshin International Patent Office	View
22	23	RYUKA IP LAW FIRM	View
23	23	Sonderhoff & Einsel	View
24	22	HIBIKI IP LAW FIRM	View
25	22	TAIYO, NAKAJIMA & KATO	View
26	21	ONDA TECHNO Intl. Patent Attys	View
27	21	SUGIMURA & Partners	View
28	20	SOCO IP LAW FIRM	View
29	19	Kaede Patent Attorneys' Office	View
30	19	Soei Patent & Law Firm	View
31	18	Sonoda & Kobayashi	View
32	18	TAKADA, TAKAHASHI & PARTNERS	View
33	17	Sano Patent Office	View
34	17	Katayose Patent	View
35	16	Nakajima & Associates IP Firm	View
36	16	PRIMEWORKS IP Attorneys	View
37	16	Ohtsuka Patent Office	View
38	15	SHUSAKU・YAMAMOTO	View
39	15	In-house patent attorney	－
40	13	TSUTSUI & ASSOCIATES	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.