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

2019-05-06 2019-05-05

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 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, it was counted as being handled by the firm).

Ranking	No.	IP law firm	Website
1	698	Sakai International Patent Office	View
2	588	SHIGA International Patent Office	View
3	544	Ohtsuka Patent Office	View
4	450	ITOH International Patent Office	View
5	448	In-house patent attorney	－
6	257	In-house patent attorney	－
7	203	HIBIKI IP LAW FIRM	View
8	172	KOKUBUN INTERNATIONAL PATENTS & TRADEMARKS	View
9	167	CHUO INTERNATIONAL PATENT FIRM	View
10	154	Hazuki International	View
11	147	HARAKENZO WORLD PATENT & TRADEMARK	View
12	138	Nishikawa & Associates	View
13	128	Miyoshi & Miyoshi	View
14	128	Nagoya International Patent Firm	View
15	123	In-house patent attorney	－
16	119	SUZUYE & SUZUYE Intellectual Property Law	View
17	118	SUGIMURA & Partners	View
18	118	Isono International Patent Office, P. C.	View
19	115	Fukami Patent Office, P.C.	View
20	114	Washida & Associates	View
21	109	Soei Patent & Law Firm	View
22	108	NII Patent Firm	View
23	103	TAIYO, NAKAJIMA & KATO	View
24	102	RYUKA IP LAW FIRM	View
25	99	Sanno Patent Office	View
26	95	Patent Attorney's Office Yoshida, Yoshitake and Arita	View
27	94	Asahi Patent Firm	View
28	93	Fujimoto International Patent Firm	View
29	93	Furuya International Patent Office	View
30	91	Sano Patent Office	View
31	90	Osuga & Associates	View
32	89	Okabe International Patent Office	View
33	87	S & S INTERNATIONAL PPC	View
34	83	Ashida & Kimura	View
35	80	TANI & ABE, p.c.	View
36	80	Koyo International Patent Firm	View
37	79	KOHNO & KOHNO	View
38	79	Minami Aoyama Patent and Trademark Attorneys	View
39	79	Takaoka IP Law	View
40	77	IP seed Patent Firm	View
41	76	In-house patent attorney	－
42	75	Yoshida & Wakabayashi IP Firm	View
43	75	Shobayashi International Patent &Trademark Office	View
44	75	MIZOI INTERNATIONAL PATENT FIRM	None
45	74	DAIDO Patent Attorneys P.C.	View
46	71	A. Kato & Associates	View
47	70	Nagai & Associates	View
48	70	PRIMEWORKS IP Attorneys	View
49	70	INFORT PATENT FIRM	View
50	70	Kaede Patent Attorneys' 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, 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.