First of all, the term "......ed" is regarded as an offensive term and ignorant to use in this context. It suggests a defect in people. To use your term, "......ed" people are not defective, just each individually different. So-called "......ed" people often have special talents that "normals" do not possess. The accepted term is "developmentally handicapped."
Now, let's get back on topic. Let's take for example a patented product. In order to not violate the patent there must be three significant improvements upon the original product. Do these copy tanks have three significant improvements? I think not. They are basically the same shape, made with the exact same material and the colors are even called the same names. I see nothing in them that "evolved" the tanks to a new or higher level. These are just blatant rip-offs. I suspect the maker of these copy tanks bought an original Lava Tank, measured it and then put the measurements into his computerized CNC lathe and copied away. The only slight difference appears to be the mouthpiece, which appears to be a hybrid pawn-ming shape. Oh yea, and for the same price, no cartomizer is included. Copying things doesn't evolve or improve anything. It is just a facsimile of the original and nothing more. If he had made significant improvements, or made them look different that would be another story. But this guy is just trying to cash in on the demand for Jonboyusmc's tanks. Enough said.