<2019-All> Firm Ranking of the number of Japanese granted patents in the Adhesive material field in 2019

2020-04-29 2020-04-19

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 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	148	SHIGA International Patent Office	View
2	55	In-house patent attorney	－
3	46	Unius Patent Attorneys Office	View
4	43	Soei Patent & Law Firm	View
5	43	Ohtani Patent Office	View
6	40	YASUTOMI & Associates	View
7	30	KYODO PATENT LAW FIRM	View
8	29	SANSUI PATENT FIRM	View
9	27	MOMII & ASSOCIATES	View
10	26	Aoyama & Partners	View
11	26	Esaki & Associates	View
12	23	SEIWA PATENT & LAW	View
13	22	Eimei Patent Office	N/A
14	20	TMI Associates	View
15	20	In-house patent attorney	－
16	18	SIKs & Co.	View
17	18	Miyazaki & Metsugi	View
18	18	GOTO & CO.	View
19	17	HATTA & ASSOCIATES	View
20	15	SSINPAT PATENT FIRM	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.