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

2019-04-30 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: 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	76	KATAYAMA & PARTNERS	View
2	44	Sanno Patent Office	View
3	43	Miyazaki & Metsugi	View
4	38	In-house patent attorney	－
5	37	Kaede Patent Attorneys' Office	View
6	36	Sakai International Patent Office	View
7	35	Fukami Patent Office, P.C.	View
8	31	ASAHI & MASUDA PATENT & TRADEMARK ATTORNEYS	View
9	30	I.F. PARTNERS Patent Attorneys	View
10	29	SHIGA International Patent Office	View
11	27	TMI Associates	View
12	26	Sato International Patent Firm	View
13	24	In-house patent attorney	－
14	24	Miyoshi & Miyoshi	View
15	23	Sohshin International Patent Office	View
16	22	ITOH International Patent Office	View
17	22	HIBIKI IP LAW FIRM	View
18	21	PRIMEWORKS IP Attorneys	View
19	20	KOKUBUN INTERNATIONAL PATENTS & TRADEMARKS	View
20	19	Sano Patent Office	View
21	19	SEIWA PATENT & LAW	View
22	18	Yamakawa International Patent Office	View
23	17	KYOWA PATENT AND LAW OFFICE	View
24	17	Washida & Associates	View
25	16	TAIYO, NAKAJIMA & KATO	View
26	16	In-house patent attorney	－
27	16	Patent Attorney's Office Yoshida, Yoshitake and Arita	View
28	16	Nishikawa & Associates	View
29	16	Aoyama & Partners	View
30	14	TAKADA, TAKAHASHI & PARTNERS	View
31	13	ION PATENT	View
32	13	TSUTSUI & ASSOCIATES	View
33	12	Soei Patent & Law Firm	View
34	12	RIVERFLOW international patent firm	View
35	12	ASCEND IP LAW FIRM	View
36	11	TAKAHASHI & CAMPANY	View
37	11	S. SOGA & CO.	View
38	11	ONDA TECHNO Intl. Patent Attys	View
39	11	SOCO IP LAW FIRM	View
40	11	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.