<2017-JP> 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: Japan (i.e., (i) patents with claiming priority of a Japanese application, (ii) patents based on Japanese domestic application, or (iii) patents based on PCT application whose receiving office is 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	45	In-house patent attorney	－
2	33	KATAYAMA & PARTNERS	View
3	32	ASAHI & MASUDA PATENT & TRADEMARK ATTORNEYS	View
4	31	TMI Associates	View
5	30	SEIWA PATENT & LAW	View
6	30	Miyoshi & Miyoshi	View
7	28	SHIGA International Patent Office	View
8	28	Kaede Patent Attorneys' Office	View
9	27	ITOH International Patent Office	View
10	26	Miyazaki & Metsugi	View
11	25	Sakai International Patent Office	View
12	23	Fukami Patent Office, P.C.	View
13	22	Sanno Patent Office	View
14	22	I.F. PARTNERS Patent Attorneys	View
15	21	In-house patent attorney	－
16	20	HIBIKI IP LAW FIRM	View
17	18	Yamakawa International Patent Office	View
18	17	In-house patent attorney	－
19	16	Sato International Patent Firm	View
20	15	S. SOGA & CO.	View
21	14	Patent Attorney's Office Yoshida, Yoshitake and Arita	View
22	14	Washida & Associates	View
23	14	CHUBU PATENT OFFICE	View
24	14	Hattori & Associates	View
25	13	KOKUBUN INTERNATIONAL PATENTS & TRADEMARKS	View
26	12	Sano Patent Office	View
27	12	TAIYO, NAKAJIMA & KATO	View
28	11	TAKADA, TAKAHASHI & PARTNERS	View
29	11	WAKABAYASHI PATENT AGENCY	View
30	11	TAKAHASHI & CAMPANY	View
31	10	KYOWA PATENT AND LAW OFFICE	View
32	10	SUZUYE & SUZUYE Intellectual Property Law	View
33	10	Nagoya International Patent Firm	View
34	10	NII Patent Firm	View
35	10	Eikoh Patent Firm, P.C.	View
36	10	Aoyama & Partners	View
37	10	In-house patent attorney	－
38	10	Kai-U Patent Law Firm	View
39	10	Nishikawa & Associates	View
40	9	Technopeer patents & trademarks	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.