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

2019-01-03 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: 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	377	ITOH International Patent Office	View
2	358	SHIGA International Patent Office	View
3	339	SHINSEI PATENT OFFICE	View
4	335	SUZUYE & SUZUYE Intellectual Property Law	View
5	286	ITOH-SHIN PATENT OFFICE	View
6	260	SHUSAKU・YAMAMOTO	View
7	194	SEIWA PATENT & LAW	View
8	180	Sakai International Patent Office	View
9	166	Nakamura & Partners	View
10	161	ONDA TECHNO Intl. Patent Attys	View
11	158	Toranomon Intellectual Property Firm	View
12	153	In-house patent attorney	－
13	137	In-house patent attorney	－
14	128	Fukami Patent Office, P.C.	View
15	126	Aoyama & Partners	View
16	125	YUASA AND HARA	View
17	119	Soei Patent & Law Firm	View
18	116	TANI & ABE, p.c.	View
19	116	In-house patent attorney	－
20	114	Ohtsuka Patent Office	View
21	114	SUBARU PATENT OFFICE	View
22	106	M&S Partners	View
23	100	Olive International Patent Office	View
24	99	YKI Intellectual Property Attorneys	View
25	95	TAIYO, NAKAJIMA & KATO	View
26	80	Washida & Associates	View
27	80	SUGIMURA & Partners	View
28	71	IP Firm SHUWA	View
29	70	Kita-Aoyama International Patent Bureau	View
30	66	Misawa Patent, p.c.	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.