<2017-JP> 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: Japan (i.e., (i) patents with claiming priority of a Japanese application, (ii) patents based on Japanese domestic application, or (iii) patents based on PCT application whose receiving office is 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	283	ITOH-SHIN PATENT OFFICE	View
2	271	SUZUYE & SUZUYE Intellectual Property Law	View
3	164	Sakai International Patent Office	View
4	148	Toranomon Intellectual Property Firm	View
5	133	SHIGA International Patent Office	View
6	116	In-house patent attorney	－
7	103	Ohtsuka Patent Office	View
8	84	Olive International Patent Office	View
9	75	TAIYO, NAKAJIMA & KATO	View
10	70	Soei Patent & Law Firm	View
11	69	IP Firm SHUWA	View
12	65	Misawa Patent, p.c.	View
13	63	In-house patent attorney	－
14	62	YKI Intellectual Property Attorneys	View
15	58	Washida & Associates	View
16	56	Aoyama & Partners	View
17	56	Tokyo International Parent Firm	View
18	53	In-house patent attorney	－
19	51	Koyo International Patent Firm	View
20	48	Matsuoka & Co.	View
21	48	In-house patent attorney	－
22	47	Toho International Patent & Law Office	View
23	44	SUGIMURA & Partners	View
24	41	KOKUBUN INTERNATIONAL PATENTS & TRADEMARKS	View
25	40	Kyoritsu Institute	View
26	40	RIVERFLOW international patent firm	View
27	38	Yanagida & Associates	View
28	38	Kyoritsu Institute	View
29	37	Matsuura & Associates	View
30	36	LUKE'S International Patent Firm	None

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.