The following table shows the ranking of Japanese IP law firm. The ranking is based on the following conditions.
- Technical field: IT (information technology, computer Software, computer program, method using software, etc.)
- Status: Japanese granted patents in 2021 (registration date).
- First country: Foreign (i.e., patents with claiming priority of a foreign application, or patents based on PCT application whose receiving office is not 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 (attorney), it was counted as being handled by the firm).
Ranking | No. | IP law firm | Website |
---|---|---|---|
1 | 595 | SHIGA International Patent Office | View |
2 | 387 | ITOH International Patent Office | View |
3 | 177 | Fukami Patent Office, P.C. | View |
4 | 163 | SHUSAKU・YAMAMOTO | View |
5 | 153 | TMI Associates | View |
6 | 133 | Ohtsuka Patent Office | View |
7 | 112 | Nakamura & Partners | View |
8 | 108 | TANI & ABE, p.c. | View |
9 | 98 | SEIWA PATENT & LAW | View |
10 | 95 | Asamura Patent Office, p.c. | View |
11 | 94 | RYUKA IP LAW FIRM | View |
12 | 87 | In-house patent attorney | - |
13 | 78 | YUASA AND HARA | View |
14 | 74 | Sonderhoff & Einsel | View |
15 | 70 | SUGIMURA & Partners | View |
16 | 60 | Sonoda & Kobayashi | View |
17 | 60 | Kyosei International Patent Office | View |
18 | 58 | SUZUYE & SUZUYE Intellectual Property Law | View |
19 | 56 | SANSUI PATENT FIRM | View |
20 | 52 | TAIYO, NAKAJIMA & KATO | View |
21 | 51 | MAEDA & PARTNERS | View |
22 | 50 | KYOWA PATENT AND LAW OFFICE | View |
23 | 49 | ONDA TECHNO Intl. Patent Attys | View |
24 | 48 | TRY International IP LAW FIRM | View |
25 | 44 | PRIMEWORKS IP Attorneys | View |
26 | 44 | Aoyama & Partners | View |
27 | 44 | Olive International Patent Office | View |
28 | 35 | Tsubame Patent Attorney Firm | View |
29 | 34 | CP JAPAN IP Attorneys | View |
30 | 34 | Shinjyu GLOBAL IP | View |
31 | 32 | In-house patent attorney | - |
32 | 32 | Shobayashi International Patent &Trademark Office | View |
33 | 31 | Okabe International Patent Office | View |
34 | 31 | IPWIN | N/A |
35 | 30 | S. SOGA & CO. | View |
36 | 29 | World IP Law | View |
37 | 28 | TSUKUNI & ASSOCIATES | View |
38 | 27 | Yamakawa International Patent Office | View |
39 | 26 | Miyoshi & Miyoshi | View |
40 | 26 | HIROE AND ASSOCIATES, patent professional corporation | View |
41 | 25 | Washida & Associates | View |
42 | 25 | INFORT PATENT FIRM | View |
43 | 24 | Soei Patent & Law Firm | View |
44 | 23 | Yoshikawa International Patent Office | View |
45 | 23 | KOHNO & KOHNO | View |
46 | 22 | Sakai International Patent Office | View |
47 | 21 | Unius Patent Attorneys Office | View |
48 | 21 | M&S Partners | View |
49 | 21 | Takahashi Hayashi and Partner Patent Attorneys inc. | View |
50 | 19 | KAWAGUTI & PARTNERS | 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.