system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5:How did Trunki lose their court case for copyright?

The opposing company looks like an almost exact copy of the Trunki cases to me, what makes it copyright or not copyright?
gpt
It's pretty clearly a copy of the *idea* of Trunki, but they don't have a patent on the overall idea, they only have a registered design. That covers the appearance, shape, and physical decoration of the design, and it still looks like the other product is a close enough copy 

However, the images they actually included in their design weren't photos of the fully decorated product, they were images of the shape of the case with a plain grey surface and no decoration. The court has therefore decided that the registered design protects the specific shape of the case, not the animal decoration, and they feel that the shape of the copy is sufficiently different.