Well the OP did state he's only copying the design for "fun". He made no mention of selling such an item or design. It's everyone else, foaming at the mouth, asking him to make more and sell it. It's made of wood and even if it was based upon the Element Vapor, the OP could just make some "adjustments" and say it was his own. If Element wanted to pursue something against the OP, they best pursue Atomic first, cuz Atomic's case is made out of Aluminum and looks like an exact replica of the Vapor!
i dont think no one can "pursue" or bring anybody to suit for the design of this case. In the beginning when elementcase had not sold a single case, however had the renders on their website with preorder available -- there was a blueprint/rendering for sale of the design of the case on some website. They were selling it for anybody to buy. So this leads one to think that elementcase didn't even come up with the design, they just bought it. I guess atomiccase, and fusionworks said hey why not, and went at it also -- elementcase looks like they were first out the gate.