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

2020-04-25 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: Foreign (i.e., patents with claiming priority of a foreign application, or patents based on PCT application whose receiving office is not Japan Patent Office without claiming any 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	51	SHIGA International Patent Office	View
2	42	SUZUYE & SUZUYE Intellectual Property Law	View
3	35	ITOH International Patent Office	View
4	22	Sonderhoff & Einsel	View
5	19	ONDA TECHNO Intl. Patent Attys	View
6	18	Sonoda & Kobayashi	View
7	16	SEIWA PATENT & LAW	View
8	16	Katayose Patent	View
9	15	SHUSAKU・YAMAMOTO	View
10	15	Fukami Patent Office, P.C.	View
11	14	RYUKA IP LAW FIRM	View
12	13	Nakajima & Associates IP Firm	View
13	10	TMI Associates	View
14	10	KYOWA PATENT AND LAW OFFICE	View
15	10	Aoyama & 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.