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

2020-05-07 2020-04-19

The following table shows the ranking of Japanese IP law firm. The ranking is based on the following conditions.

Technical field: Semiconductor (semiconductor chip, material, wafer, device, 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	144	Patent Attorney's Office Yoshida, Yoshitake and Arita	View
2	139	TSUTSUI & ASSOCIATES	View
3	138	Fukami Patent Office, P.C.	View
4	122	Soei Patent & Law Firm	View
5	101	Sakai International Patent Office	View
6	101	Ai Association of Patent and Trademark Attorneys	View
7	94	SHIGA International Patent Office	View
8	80	TAIYO, NAKAJIMA & KATO	View
9	74	ITOH International Patent Office	View
10	72	TAKADA, TAKAHASHI & PARTNERS	View
11	60	KYOWA PATENT AND LAW OFFICE	View
12	58	HYUGAJI & Associates	View
13	56	Aoyama & Partners	View
14	56	HIBIKI IP LAW FIRM	View
15	54	A.SAKAI & ASSOCIATES	View
16	54	Kai-U Patent Law Firm	View
17	53	RYUKA IP LAW FIRM	View
18	51	Polaire Intellectual Property Corporation	View
19	50	Prezio IP Firm	View
20	50	ION PATENT	View
21	50	YOKOHAMA INTERNATIONAL PATENT LAW OFFICE	View
22	48	YOU-I Patent Firm	View
23	48	Yoshimiya Patent Office	View
24	45	Miyoshi & Miyoshi	View
25	44	SUZUYE & SUZUYE Intellectual Property Law	View
26	43	YUWA INTERNATIONAL PATENT FIRM	View
27	41	NICHIEI Patent and Trademark Attorneys	View
28	37	SEIWA PATENT & LAW	View
29	37	AICHI, Takahashi, Iwakura & Associates	View
30	35	PALMO PATENT FIRM	View
31	34	OKUDA & ASSOCIATES	View
32	32	SUGIMURA & Partners	View
33	31	In-house patent attorney	－
34	30	Eimei Patent Office	N/A
35	28	NII Patent Firm	View
36	28	Unius Patent Attorneys Office	View
37	28	Kyowey International	View
38	28	Sugitani Patent Office	N/A
39	28	Ohtsuka Patent Office	View
40	27	KOKUBUN INTERNATIONAL PATENTS & TRADEMARKS	View
41	27	ONDA TECHNO Intl. Patent Attys	View
42	27	Yamakawa International Patent Office	View
43	26	Matsuura & Associates	View
44	25	TANI & ABE, p.c.	View
45	25	SIKs & Co.	View
46	25	Hattori & Associates	View
47	24	In-house patent attorney	－
48	24	PRIMEWORKS IP Attorneys	View
49	23	In-house patent attorney	－
50	23	Isono International Patent Office, P. C.	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, semiconductor 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.