<2017-JP> Firm Ranking of the number of Japanese granted patents in the Electric communication field in 2017

2019-01-28 2019-04-28

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

Technical field: Electric communication (smartphone, cell phone, wireless network, video streaming, videoconference device, user authentication system, 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	747	Sakai International Patent Office	View
2	570	SHIGA International Patent Office	View
3	510	Ohtsuka Patent Office	View
4	465	ITOH International Patent Office	View
5	415	In-house patent attorney	－
6	211	Miyoshi & Miyoshi	View
7	204	In-house patent attorney	－
8	174	HIBIKI IP LAW FIRM	View
9	169	SUGIMURA & Partners	View
10	162	In-house patent attorney	－
11	151	SUZUYE & SUZUYE Intellectual Property Law	View
12	134	TAIYO, NAKAJIMA & KATO	View
13	134	CHUO INTERNATIONAL PATENT FIRM	View
14	133	KOKUBUN INTERNATIONAL PATENTS & TRADEMARKS	View
15	126	PRIMEWORKS IP Attorneys	View
16	125	HARAKENZO WORLD PATENT & TRADEMARK	View
17	122	Osuga & Associates	View
18	118	Washida & Associates	View
19	114	Nishikawa & Associates	View
20	113	Fukami Patent Office, P.C.	View
21	107	Hazuki International	View
22	106	Eikoh Patent Firm, P.C.	View
23	103	In-house patent attorney	－
24	98	SEIWA PATENT & LAW	View
25	98	Patent Attorney's Office Yoshida, Yoshitake and Arita	View
26	97	Sanno Patent Office	View
27	96	Isono International Patent Office, P. C.	View
28	93	NII Patent Firm	View
29	92	Ashida & Kimura	View
30	92	INFORT PATENT FIRM	View
31	91	Nagoya International Patent Firm	View
32	89	Soei Patent & Law Firm	View
33	89	RYUKA IP LAW FIRM	View
34	88	Koyo International Patent Firm	View
35	84	Fujimoto International Patent Firm	View
36	84	ITOH-SHIN PATENT OFFICE	View
37	83	Sano Patent Office	View
38	82	TANI & ABE, p.c.	View
39	78	Shobayashi International Patent &Trademark Office	View
40	77	Aoyama & Partners	View
41	71	Kai-U Patent Law Firm	View
42	71	Curiuse	View
43	69	Yoshida & Wakabayashi IP Firm	View
44	68	Inamoto International Patent Firm	None
45	67	A.SAKAI & ASSOCIATES	View
46	67	WAKABAYASHI PATENT AGENCY	View
47	66	KATAYAMA & PARTNERS	View
48	64	Sankyo International Patent Attorneys Office	View
49	63	HOKUTO PATENT ATTORNEYS OFFICE	View
50	61	YKI Intellectual Property Attorneys	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, Electric communication 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.