Fair enough:  I realise that this is getting a bit repetitive;  everyone who didn't previously understand the meaning of the word "catalepsy" may well be getting there by now...  

On the other hand, kuroyume0161's last post  (not catalepsy-inducing) missed the point by a country mile - and then the rest.   If there's an American guitar called a "GenderBender", or whatever, and a Japanese guitar-maker produces a "GendaBenda", I'd say that the US manufacturer does have a potential case (this works just as well, the other way around, I should point out, where the Japanese company is the aggrieved party).    Where the "knock-off" tends not to be pursued, of course, is where the "knock-off" is actually as good as, even better than, the original..   That's never going to happen in the case of Turbosquid models, or any equivalents.   Nobody who has been allotted a zillion squid to buy helicopter gunships is going to be stupid enough to think that what is on sale at Turbosquid is the genuine article.   Well, maybe some of Mugabe's cronies, but no-one else.