The following table shows the ranking of Japanese IP law firm. The ranking is based on the following conditions.
- Technical field: Semiconductor (semiconductor chip, material, wafer, device, etc.)
- Status: Japanese granted patents in 2019 (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 | 77 | Sonderhoff & Einsel | View |
2 | 61 | Sonoda & Kobayashi | View |
3 | 60 | SEIWA PATENT & LAW | View |
4 | 58 | ITOH International Patent Office | View |
5 | 46 | SUZUYE & SUZUYE Intellectual Property Law | View |
6 | 38 | Nakamura & Partners | View |
7 | 36 | YKI Intellectual Property Attorneys | View |
8 | 36 | SHIGA International Patent Office | View |
9 | 33 | Meisei International Patent Firm | View |
10 | 31 | RYUKA IP LAW FIRM | View |
11 | 30 | TRY International IP LAW FIRM | View |
12 | 28 | SUGIMURA & Partners | View |
13 | 28 | Kyosei International Patent Office | View |
14 | 27 | SENDA PATENT BUREAU | View |
15 | 26 | Aoyama & Partners | View |
16 | 26 | Fukami Patent Office, P.C. | View |
17 | 20 | TMI Associates | View |
18 | 18 | ONDA TECHNO Intl. Patent Attys | View |
19 | 18 | Katayose Patent | View |
20 | 16 | Osuga & Associates | View |
21 | 16 | Washida & Associates | View |
22 | 14 | TSUKUNI & ASSOCIATES | View |
23 | 13 | SHUSAKU・YAMAMOTO | View |
24 | 13 | Anzai Patent Firm | N/A |
25 | 12 | YUASA AND HARA | View |
26 | 12 | Suzuran International Patent Firm | N/A |
27 | 12 | TAIYO, NAKAJIMA & KATO | View |
28 | 12 | Soei Patent & Law Firm | View |
29 | 11 | Okabe International Patent Office | View |
30 | 10 | Miyoshi & Miyoshi | 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.