<2019-All> Firm Ranking of the number of Japanese granted patents in the Hybrid Car field in 2019

2020-04-22 2020-04-19

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

Technical field: Hybrid car (Hybrid car technology having broad facet classification: control device, power supply system, electric power conversion device for hybrid vehicle, etc.)
Status: Japanese granted patents in 2019 (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	38	Ikeda Patent Office	View
2	34	Fukami Patent Office, P.C.	View
3	32	ITEC International Patent Firm	View
4	24	NISSAY INTERNATIONAL PATENT OFFICE	View
5	22	Watanabe International Patent Office	View
6	18	Sonoda & Kobayashi	View
7	16	YKI Intellectual Property Attorneys	View
8	16	HATTORI & PARTNERS	View
9	16	Koh-Ei Patent Firm, P.C.	View
10	16	AIGI Intellectual Property Law Firm	View
11	15	Aomi Patent	View
12	15	Seiryu International Patent Firm	N/A
13	13	Tokyo Central Patent Firm	View
14	13	TSUTSUI & ASSOCIATES	View
15	11	CREO Law & Intellectual Property	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, Hybrid Car 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.