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

2020-05-17 2020-04-19

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

Ranking	No.	IP law firm	Website
1	631	Sakai International Patent Office	View
2	581	Ohtsuka Patent Office	View
3	573	SHIGA International Patent Office	View
4	492	In-house patent attorney	－
5	400	ITOH International Patent Office	View
6	292	In-house patent attorney	－
7	248	HIBIKI IP LAW FIRM	View
8	177	S & S INTERNATIONAL PPC	View
9	171	Nishikawa & Associates	View
10	158	CHUO INTERNATIONAL PATENT FIRM	View
11	149	KOKUBUN INTERNATIONAL PATENTS & TRADEMARKS	View
12	145	HARAKENZO WORLD PATENT & TRADEMARK	View
13	143	NII Patent Firm	View
14	141	SUZUYE & SUZUYE Intellectual Property Law	View
15	123	TAIYO, NAKAJIMA & KATO	View
16	119	Isono International Patent Office, P. C.	View
17	117	Fujimoto International Patent Firm	View
18	112	Miyoshi & Miyoshi	View
19	105	Nagoya International Patent Firm	View
20	104	In-house patent attorney	－
21	103	RYUKA IP LAW FIRM	View
22	101	TANI & ABE, p.c.	View
23	100	SUGIMURA & Partners	View
24	96	Fukami Patent Office, P.C.	View
25	96	YKI Intellectual Property Attorneys	View
26	93	IP Firm SHUWA	View
27	92	DAIDO Patent Attorneys P.C.	View
28	92	Patent Attorney's Office Yoshida, Yoshitake and Arita	View
29	88	Osuga & Associates	View
30	87	Washida & Associates	View
31	86	Nagai & Associates	View
32	84	PRIMEWORKS IP Attorneys	View
33	84	Okabe International Patent Office	View
34	79	Shobayashi International Patent &Trademark Office	View
35	78	Asahi Patent Firm	View
36	77	Ashida & Kimura	View
37	77	TSUTSUI & ASSOCIATES	View
38	77	SOCO IP LAW FIRM	View
39	74	In-house patent attorney	－
40	72	Eikoh Patent Firm, P.C.	View
41	71	IP seed Patent Firm	View
42	70	Minami Aoyama Patent and Trademark Attorneys	View
43	69	Soei Patent & Law Firm	View
44	67	Matsuura & Associates	View
45	66	Kai-U Patent Law Firm	View
46	66	Furuya International Patent Office	View
47	65	Koyo International Patent Firm	View
48	65	KOHNO & KOHNO	View
49	65	Sano Patent Office	View
50	63	TNK Asia IP 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.