Starting from April 1, 2015, new types of trademarks including a "Colour Mark without–delineated contour" have become registrable in Japan. Since then, 7 trademarks have been registered, the details of which can be downloaded from the link below.
Click here for details (printable version)
Obtaining a trademark registration for Colour Mark without–delineated contour is still a difficult challenge in Japan. At the moment, all of the registered trademarks listed above have two things in common; (1) the trademark consists of two or more colours, and (2) the applicant have proven that the mark is well-known in the Japanese market.
Feel free to contact us if you seek further information or advice.
SUZUYE & SUZUYE
Trademark Division