<2018-Foreign> Firm Ranking of the number of Japanese granted patents in the Medical device field in 2018

2019-03-30 2019-04-28

The following table shows the ranking of Japanese IP law firm. The ranking is based on the following conditions.

Technical field: Medical device (syringe, stent, endoscope apparatus, X-ray imaging apparatus, etc.)
Status: Japanese granted patents in 2018 (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	446	SHINSEI PATENT OFFICE	View
2	339	ITOH International Patent Office	View
3	265	SHUSAKU・YAMAMOTO	View
4	203	SHIGA International Patent Office	View
5	182	SEIWA PATENT & LAW	View
6	171	In-house patent attorney	－
7	166	Nakamura & Partners	View
8	140	SUBARU PATENT OFFICE	View
9	137	ONDA TECHNO Intl. Patent Attys	View
10	129	TANI & ABE, p.c.	View
11	122	M&S Partners	View
12	117	YUASA AND HARA	View
13	80	Aoyama & Partners	View
14	71	Fukami Patent Office, P.C.	View
15	67	Kita-Aoyama International Patent Bureau	View
16	65	Sonderhoff & Einsel	View
17	64	SUZUYE & SUZUYE Intellectual Property Law	View
18	60	Takaoka IP Law	View
19	58	TMI Associates	View
20	51	Kai-U Patent Law Firm	View
21	51	Okuyama & Sasajima	View
22	49	Asamura Patent Office, p.c.	View
23	44	YKI Intellectual Property Attorneys	View
24	43	Soei Patent & Law Firm	View
25	42	In-house patent attorney	－
26	40	TSUKUNI & ASSOCIATES	View
27	39	Yoshikawa International Patent Office	View
28	36	Shimizu Patent Office	View
29	36	Sonoda & Kobayashi	View
30	33	KYOWA PATENT AND LAW OFFICE	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, Medical device 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.