<2021-JP> Firm Ranking of the number of Japanese granted patents in the Electric communication field in 2021

2022-09-24 2022-10-05

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 2021 (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	Web
1	650	Sakai International Patent Office	View
2	507	SHIGA International Patent Office	View
3	420	ITOH International Patent Office	View
4	417	Ohtsuka Patent Office	View
5	331	In-house patent attorney	－
6	271	HIBIKI IP LAW FIRM	View
7	208	S & S INTERNATIONAL PPC	View
8	197	Nishikawa & Associates	View
9	173	In-house patent attorney	－
10	159	TAIYO, NAKAJIMA & KATO	View
11	153	NII Patent Firm	View
12	136	SUZUYE & SUZUYE Intellectual Property Law	View
13	133	Washida & Associates	View
14	133	SOCO IP LAW FIRM	View
15	123	KOKUBUN INTERNATIONAL PATENTS & TRADEMARKS	View
16	116	INFORT PATENT FIRM	View
17	116	Fukami Patent Office, P.C.	View
18	106	TSUTSUI & ASSOCIATES	View
19	105	CHUO INTERNATIONAL PATENT FIRM	View
20	96	TANI & ABE, p.c.	View
21	95	DAIDO Patent Attorneys P.C.	View
22	95	Miyoshi & Miyoshi	View
23	89	In-house patent attorney	－
24	83	Asahi Patent Firm	View
25	83	YKI Intellectual Property Attorneys	View
26	82	HARAKENZO WORLD PATENT & TRADEMARK	View
27	81	Eikoh Patent Firm, P.C.	View
28	81	Isono International Patent Office, P. C.	View
29	80	IP Firm SHUWA	View
30	79	Soei Patent & Law Firm	View
31	77	Kai-U Patent Law Firm	View
32	77	PRIMEWORKS IP Attorneys	View
33	74	RYUKA IP LAW FIRM	View
34	70	SUGIMURA & Partners	View
35	70	Okabe International Patent Office	View
36	70	Fujimoto International Patent Firm	View
37	67	Koyo International Patent Firm	View
38	67	Serio Patent & Trademark Attorneys	View
39	65	Ashida & Kimura	View
40	65	Nagoya International Patent Firm	View
41	64	Takaoka IP Law	View
42	63	In-house patent attorney	－
43	61	Sano Patent Office	View
44	57	KYOWA PATENT AND LAW OFFICE	View
45	56	Patent Attorney's Office Yoshida, Yoshitake and Arita	View
46	53	Aoyama & Partners	View
47	52	OHCHI INTERNATIONAL IP	View
48	52	Seiryo Intellectual Property Corp.	View
49	52	Shobayashi International Patent &Trademark Office	View
50	51	SEIWA PATENT & LAW	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.