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

2019-04-28 2019-04-28

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 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	189	TSUTSUI & ASSOCIATES	View
2	182	Patent Attorney's Office Yoshida, Yoshitake and Arita	View
3	169	Fukami Patent Office, P.C.	View
4	132	Sakai International Patent Office	View
5	113	Soei Patent & Law Firm	View
6	109	TAIYO, NAKAJIMA & KATO	View
7	99	TAKADA, TAKAHASHI & PARTNERS	View
8	98	SHIGA International Patent Office	View
9	91	ITOH International Patent Office	View
10	82	KYOWA PATENT AND LAW OFFICE	View
11	79	Ai Association of Patent and Trademark Attorneys	View
12	74	HYUGAJI & Associates	View
13	71	Kai-U Patent Law Firm	View
14	70	YOU-I Patent Firm	View
15	69	Aoyama & Partners	View
16	63	Prezio IP Firm	View
17	63	A.SAKAI & ASSOCIATES	View
18	62	HIBIKI IP LAW FIRM	View
19	61	In-house patent attorney	－
20	58	Miyoshi & Miyoshi	View
21	57	SUZUYE & SUZUYE Intellectual Property Law	View
22	53	Yoshimiya Patent Office	View
23	53	PALMO PATENT FIRM	View
24	53	ION PATENT	View
25	53	SEIWA PATENT & LAW	View
26	50	YOKOHAMA INTERNATIONAL PATENT LAW OFFICE	View
27	42	AICHI, Takahashi, Iwakura & Associates	View
28	41	KOKUBUN INTERNATIONAL PATENTS & TRADEMARKS	View
29	40	Polaire Intellectual Property Corporation	View
30	40	TANI & ABE, p.c.	View
31	39	In-house patent attorney	－
32	39	In-house patent attorney	－
33	39	RYUKA IP LAW FIRM	View
34	39	Unius Patent Attorneys Office	View
35	38	Shobayashi International Patent &Trademark Office	View
36	38	Ohtani Patent Office	View
37	38	Isono International Patent Office, P. C.	View
38	37	PRIMEWORKS IP Attorneys	View
39	36	NICHIEI Patent and Trademark Attorneys	View
40	36	Ohtsuka Patent Office	View
41	35	ATAGO IP	View
42	35	Eimei Patent Office	None
43	33	In-house patent attorney	－
44	31	S. SOGA & CO.	View
45	30	YUWA INTERNATIONAL PATENT FIRM	View
46	30	SIKs & Co.	View
47	29	In-house patent attorney	－
48	29	AMANO and Parters	View
49	29	SAKURA PATENT OFFICE	View
50	28	Seiyo 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, 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.