<2017-Foreign> Firm Ranking of the number of Japanese granted patents in the Medical device field in 2017

2019-01-06 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 2017 (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	353	ITOH International Patent Office	View
2	339	SHINSEI PATENT OFFICE	View
3	255	SHUSAKU・YAMAMOTO	View
4	225	SHIGA International Patent Office	View
5	179	SEIWA PATENT & LAW	View
6	162	Nakamura & Partners	View
7	153	In-house patent attorney	－
8	146	ONDA TECHNO Intl. Patent Attys	View
9	118	YUASA AND HARA	View
10	110	SUBARU PATENT OFFICE	View
11	106	M&S Partners	View
12	105	TANI & ABE, p.c.	View
13	95	Fukami Patent Office, P.C.	View
14	74	In-house patent attorney	－
15	70	Aoyama & Partners	View
16	70	Kita-Aoyama International Patent Bureau	View
17	64	SUZUYE & SUZUYE Intellectual Property Law	View
18	64	Takaoka IP Law	View
19	57	Kai-U Patent Law Firm	View
20	57	Sonderhoff & Einsel	View
21	50	TSUKUNI & ASSOCIATES	View
22	49	Soei Patent & Law Firm	View
23	49	Okuyama & Sasajima	View
24	41	TMI Associates	View
25	40	Shimizu Patent Office	View
26	37	YKI Intellectual Property Attorneys	View
27	36	SUGIMURA & Partners	View
28	36	Sonoda & Kobayashi	View
29	33	HARAKENZO WORLD PATENT & TRADEMARK	View
30	31	Shobayashi International Patent &Trademark 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.