<2017-All> Firm Ranking of the number of Japanese granted patents in the Adhesive material field in 2017

2019-01-04 2019-04-28

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

Technical field: Adhesive material (adhesive composition/film/sheet, 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	111	SHIGA International Patent Office	View
2	86	Soei Patent & Law Firm	View
3	65	In-house patent attorney	－
4	54	Unius Patent Attorneys Office	View
5	52	SANSUI PATENT FIRM	View
6	41	SEIWA PATENT & LAW	View
7	34	Aoyama & Partners	View
8	31	YASUTOMI & Associates	View
9	30	Ohtani Patent Office	View
10	29	MOMII & ASSOCIATES	View
11	22	KYODO PATENT LAW FIRM	View
12	21	GOTO & CO.	View
13	17	Esaki & Associates	View
14	17	TAIYO, NAKAJIMA & KATO	View
15	16	Miyazaki & Metsugi	View
16	15	K.ITO & ASSOCIATES	View
17	15	Abe, Ikubo & Katayama	View
18	15	Sonderhoff & Einsel	View
19	14	TMI Associates	View
20	14	Eimei Patent 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, Adhesive material 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.