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

2020-04-24 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: 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	50	KATAYAMA & PARTNERS	View
2	48	Sakai International Patent Office	View
3	39	In-house patent attorney	－
4	39	Miyazaki & Metsugi	View
5	38	Sanno Patent Office	View
6	30	I.F. PARTNERS Patent Attorneys	View
7	28	Sato International Patent Firm	View
8	26	ASAHI & MASUDA PATENT & TRADEMARK ATTORNEYS	View
9	26	NII Patent Firm	View
10	26	Fukami Patent Office, P.C.	View
11	26	TMI Associates	View
12	26	SHIGA International Patent Office	View
13	24	In-house patent attorney	－
14	23	Sohshin International Patent Office	View
15	23	KYOWA PATENT AND LAW OFFICE	View
16	22	HIBIKI IP LAW FIRM	View
17	21	Miyoshi & Miyoshi	View
18	21	TAIYO, NAKAJIMA & KATO	View
19	20	SOCO IP LAW FIRM	View
20	20	Yamakawa International Patent Office	View
21	19	Kaede Patent Attorneys' Office	View
22	19	ITOH International Patent Office	View
23	18	TAKADA, TAKAHASHI & PARTNERS	View
24	17	Sano Patent Office	View
25	17	SEIWA PATENT & LAW	View
26	16	Soei Patent & Law Firm	View
27	16	Aoyama & Partners	View
28	15	In-house patent attorney	－
29	13	Hattori & Associates	View
30	12	TSUTSUI & ASSOCIATES	View
31	12	RIVERFLOW international patent firm	View
32	12	In-house patent attorney	－
33	12	KOKUBUN INTERNATIONAL PATENTS & TRADEMARKS	View
34	11	SUZUYE & SUZUYE Intellectual Property Law	View
35	11	In-house patent attorney	－
36	11	YKI Intellectual Property Attorneys	View
37	11	Polaire Intellectual Property Corporation	View
38	11	Ohtsuka Patent Office	View
39	11	LEXT, P.C.	View
40	11	SUGIMURA & 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.