<2018-All> Firm Ranking of the number of Japanese granted patents in the Pigment/Dye field in 2018

2019-04-19 2019-04-28

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

Technical field: Pigment/Dye (inkjet technology, colored composition, color filter, etc.)
Status: Japanese granted patents in 2018 (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	29	SIKs & Co.	View
2	23	In-house patent attorney	－
3	20	Ohtani Patent Office	View
4	17	SHIGA International Patent Office	View
5	14	TAIYO, NAKAJIMA & KATO	View
6	14	TMI Associates	View
7	13	YKI Intellectual Property Attorneys	View
8	12	In-house patent attorney	－
9	12	In-house patent attorney	－
10	11	SAEGUSA & Partners	View
11	11	IIDA & PARTNERS	View
12	11	Tsujimaru International Patent Office	View
13	10	WAKABAYASHI PATENT AGENCY	View
14	10	Aoyama & Partners	View
15	10	The Patent Corporate Body Aruga Patent Office	View
16	10	Sonderhoff & Einsel	View
17	10	Anderson Mori & Tomotsune	View
18	9	Yoshida & Kondo	None
19	9	I.F. PARTNERS Patent Attorneys	View
20	8	SEIWA PATENT & LAW	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, Pigment/Dye 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.