<2019-All> Firm Ranking of the number of Japanese granted patents in the Catheter field in 2019

2020-04-28 2020-04-19

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 2019 (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	47	SHINSEI PATENT OFFICE	View
2	33	SHUSAKU・YAMAMOTO	View
3	31	TANI & ABE, p.c.	View
4	23	Aoyama & Partners	View
5	18	HATTA & ASSOCIATES	View
6	18	YUASA AND HARA	View
7	17	SEIWA PATENT & LAW	View
8	17	Kai-U Patent Law Firm	View
9	17	ONDA TECHNO Intl. Patent Attys	View
10	16	SOYO International IP Attorneys	View
11	16	SHIGA International Patent Office	View
12	15	ITOH International Patent Office	View
13	15	MAEDA & SUZUKI PATENT Co., Ltd.	View
14	13	Toho International Patent & Law Office	View
15	11	OSHIMA & PARTNERS	View
16	10	M&S Partners	View
17	10	In-house patent attorney	－
18	9	YKI Intellectual Property Attorneys	View
19	9	Ito & Ebi Patent Firm	N/A
20	8	Sonare IP Firm	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, Catheter 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.