The following table shows the ranking of Japanese IP law firm. The ranking is based on the following conditions.
- Technical field: Catheter (balloon catheter, robotic catheter system, intravenous catheter apparatus, 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 | 46 | SHINSEI PATENT OFFICE | View |
| 2 | 30 | SEIWA PATENT & LAW | View |
| 3 | 28 | ONDA TECHNO Intl. Patent Attys | View |
| 4 | 26 | SHUSAKU・YAMAMOTO | View |
| 5 | 25 | SHIGA International Patent Office | View |
| 6 | 22 | YUASA AND HARA | View |
| 7 | 21 | TANI & ABE, p.c. | View |
| 8 | 20 | ITOH International Patent Office | View |
| 9 | 19 | Aoyama & Partners | View |
| 10 | 16 | Kai-U Patent Law Firm | View |
| 11 | 15 | M&S Partners | View |
| 12 | 15 | Nakamura & Partners | View |
| 13 | 14 | Toho International Patent & Law Office | View |
| 14 | 11 | HATTA & ASSOCIATES | View |
| 15 | 11 | In-house patent attorney | － |
| 16 | 11 | Sonare IP Firm | View |
| 17 | 10 | Soei Patent & Law Firm | View |
| 18 | 9 | Aichi & Mashiko Patent Firm Ochanomizu Office | View |
| 19 | 9 | ASAHI & MASUDA PATENT & TRADEMARK ATTORNEYS | View |
| 20 | 9 | Fukami Patent Office, P.C. | 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.
