[Medical device] Firm Ranking of the number of Japanese granted patents in the Medical device field in 2020

2021-06-01 2021-07-12

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 2020 (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	349	SHIGA International Patent Office	View
2	287	SHINSEI PATENT OFFICE	View
3	277	ITOH International Patent Office	View
4	235	SHUSAKU・YAMAMOTO	View
5	207	SEIWA PATENT & LAW	View
6	203	SUZUYE & SUZUYE Intellectual Property Law	View
7	180	Nakamura & Partners	View
8	156	Sakai International Patent Office	View
9	153	TAIYO, NAKAJIMA & KATO	View
10	144	M&S Partners	View
11	140	ONDA TECHNO Intl. Patent Attys	View
12	136	Toranomon Intellectual Property Firm	View
13	123	YUASA AND HARA	View
14	119	TANI & ABE, p.c.	View
15	116	SUGIMURA & Partners	View
16	116	Aoyama & Partners	View
17	109	In-house patent attorney	－
18	108	Fukami Patent Office, P.C.	View
19	102	Ohtsuka Patent Office	View
20	101	HARAKENZO WORLD PATENT & TRADEMARK	View
21	93	Koyo International Patent Firm	View
22	82	TMI Associates	View
23	80	SUBARU PATENT OFFICE	View
24	79	In-house patent attorney	－
25	77	YKI Intellectual Property Attorneys	View
26	76	Soei Patent & Law Firm	View
27	74	Washida & Associates	View
28	65	ITOH-SHIN PATENT OFFICE	View
29	64	HATTA & ASSOCIATES	View
30	63	KYOWA PATENT AND LAW OFFICE	View
31	62	Kai-U Patent Law Firm	View
32	62	LUKE'S International Patent Firm	View
33	62	IP Firm SHUWA	View
34	61	Shobayashi International Patent &Trademark Office	View
35	61	Hiraki & Associates	View
36	55	TADA, MIYAGAWA & HORII Patent, Trademark and Design Agents	View
37	54	Asamura Patent Office, p.c.	View
38	54	Okuyama & Sasajima	View
39	54	Sonderhoff & Einsel	View
40	53	Takaoka IP Law	View
41	52	In-house patent attorney	－
42	49	Matsuura & Associates	View
43	48	Miyazono Patent Office	View
44	47	KAWAGUTI & PARTNERS	View
45	47	Toho International Patent & Law Office	View
46	46	Kyoritsu Institute	View
47	45	SOYO International IP Attorneys	View
48	44	Miyoshi & Miyoshi	View
49	43	Sonoda & Kobayashi	View
50	42	Kita-Aoyama International Patent Bureau	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.