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

2022-09-23 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: All (i.e., patents with claiming priority of a Japanese application or a foreign application, or without claiming 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	Web
1	1218	SHIGA International Patent Office	View
2	855	ITOH International Patent Office	View
3	700	Sakai International Patent Office	View
4	608	Ohtsuka Patent Office	View
5	420	SUZUYE & SUZUYE Intellectual Property Law	View
6	337	In-house patent attorney	－
7	314	HIBIKI IP LAW FIRM	View
8	279	SEIWA PATENT & LAW	View
9	272	KYOWA PATENT AND LAW OFFICE	View
10	245	TANI & ABE, p.c.	View
11	232	NII Patent Firm	View
12	227	RYUKA IP LAW FIRM	View
13	217	Fukami Patent Office, P.C.	View
14	209	S & S INTERNATIONAL PPC	View
15	202	Washida & Associates	View
16	199	Nishikawa & Associates	View
17	187	TAIYO, NAKAJIMA & KATO	View
18	174	In-house patent attorney	－
19	169	Sonoda & Kobayashi	View
20	168	SHUSAKU・YAMAMOTO	View
21	157	TMI Associates	View
22	146	Nakamura & Partners	View
23	137	INFORT PATENT FIRM	View
24	134	SOCO IP LAW FIRM	View
25	123	KOKUBUN INTERNATIONAL PATENTS & TRADEMARKS	View
26	117	Miyoshi & Miyoshi	View
27	115	Okabe International Patent Office	View
28	114	TSUTSUI & ASSOCIATES	View
29	108	HARAKENZO WORLD PATENT & TRADEMARK	View
30	105	CHUO INTERNATIONAL PATENT FIRM	View
31	104	SUGIMURA & Partners	View
32	99	Aoyama & Partners	View
33	99	Kai-U Patent Law Firm	View
34	98	Soei Patent & Law Firm	View
35	95	DAIDO Patent Attorneys P.C.	View
36	95	PRIMEWORKS IP Attorneys	View
37	90	In-house patent attorney	－
38	87	Eikoh Patent Firm, P.C.	View
39	87	YKI Intellectual Property Attorneys	View
40	85	Asahi Patent Firm	View
41	85	IP Firm SHUWA	View
42	84	Isono International Patent Office, P. C.	View
43	82	ONDA TECHNO Intl. Patent Attys	View
44	79	Curiuse	View
45	74	Nagoya International Patent Firm	View
46	73	Takaoka IP Law	View
47	71	Ashida & Kimura	View
48	70	Fujimoto International Patent Firm	View
49	69	Koyo International Patent Firm	View
50	67	Serio Patent & Trademark 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.