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: 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 | Website |
---|---|---|---|
1 | 1401 | SHIGA International Patent Office | View |
2 | 1089 | ITOH International Patent Office | View |
3 | 871 | SUZUYE & SUZUYE Intellectual Property Law | View |
4 | 700 | Sakai International Patent Office | View |
5 | 671 | Ohtsuka Patent Office | View |
6 | 463 | In-house patent attorney | - |
7 | 336 | RYUKA IP LAW FIRM | View |
8 | 309 | SEIWA PATENT & LAW | View |
9 | 266 | HIBIKI IP LAW FIRM | View |
10 | 258 | Hazuki International | View |
11 | 257 | In-house patent attorney | - |
12 | 246 | SHUSAKU・YAMAMOTO | View |
13 | 222 | TANI & ABE, p.c. | View |
14 | 188 | Fukami Patent Office, P.C. | View |
15 | 180 | NII Patent Firm | View |
16 | 178 | HARAKENZO WORLD PATENT & TRADEMARK | View |
17 | 172 | KOKUBUN INTERNATIONAL PATENTS & TRADEMARKS | View |
18 | 172 | Okabe International Patent Office | View |
19 | 167 | CHUO INTERNATIONAL PATENT FIRM | View |
20 | 163 | Washida & Associates | View |
21 | 159 | Miyoshi & Miyoshi | View |
22 | 152 | SUGIMURA & Partners | View |
23 | 151 | Nishikawa & Associates | View |
24 | 136 | ONDA TECHNO Intl. Patent Attys | View |
25 | 131 | Nagoya International Patent Firm | View |
26 | 131 | Curiuse | View |
27 | 128 | Soei Patent & Law Firm | View |
28 | 125 | In-house patent attorney | - |
29 | 123 | Isono International Patent Office, P. C. | View |
30 | 121 | Nakamura & Partners | View |
31 | 120 | TMI Associates | View |
32 | 118 | TAIYO, NAKAJIMA & KATO | View |
33 | 111 | Aoyama & Partners | View |
34 | 101 | Sanno Patent Office | View |
35 | 98 | KOHNO & KOHNO | View |
36 | 98 | TSUTSUI & ASSOCIATES | View |
37 | 96 | Osuga & Associates | View |
38 | 96 | Patent Attorney's Office Yoshida, Yoshitake and Arita | View |
39 | 94 | Asahi Patent Firm | View |
40 | 94 | KYOWA PATENT AND LAW OFFICE | View |
41 | 93 | Sano Patent Office | View |
42 | 93 | Fujimoto International Patent Firm | View |
43 | 93 | Furuya International Patent Office | View |
44 | 91 | S & S INTERNATIONAL PPC | View |
45 | 90 | Ashida & Kimura | View |
46 | 90 | Minami Aoyama Patent and Trademark Attorneys | View |
47 | 88 | Takaoka IP Law | View |
48 | 87 | INFORT PATENT FIRM | View |
49 | 84 | Koyo International Patent Firm | View |
50 | 84 | Shobayashi International Patent &Trademark Office | View |
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.