Ruifan Japan, the maker of the King Blade brand of pen lights often used in live concerts in Japan, filed a lawsuit on March 16 against the company Happyjoint, claiming that the latter’s Colorful Fantastic brand of pen lights infringed on Ruifan’s King Blade design rights.
The photograph included in the complaint showed a product that appeared to be a King Blade product, but was supposedly an imitation.
In the lawsuit, Ruifan claimed that its King Blade pen lights were brighter and lasted longer, with a button on the device’s underside to change the light color.
Ruifan noted that there is a danger that Happyjoint’s products could be confused for Ruifan’s, and negatively impact the reputation of the King Blade brand.