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

2019-05-01 2019-04-30

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: 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	70	SUZUYE & SUZUYE Intellectual Property Law	View
2	51	SHIGA International Patent Office	View
3	47	ITOH International Patent Office	View
4	26	RYUKA IP LAW FIRM	View
5	25	Sonderhoff & Einsel	View
6	22	Nakajima & Associates IP Firm	View
7	20	SEIWA PATENT & LAW	View
8	19	Katayose Patent	View
9	16	ONDA TECHNO Intl. Patent Attys	View
10	15	SHUSAKU・YAMAMOTO	View
11	15	SUGIMURA & Partners	View
12	10	Suzuran International Patent Firm	None
13	9	S. SOGA & CO.	View
14	9	Fukami Patent Office, P.C.	View
15	7	Yamakawa International Patent Office	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.