I'm still sceptical.
Look at fake headphones, or fake batteries. Some of the clones are reportedly pretty much indistinguishable on the surface - Chinese workshops have taken cloning to an incredibly fine art, because there's no enforcement of international IPR. These are often not high-end, designer goods - they're mass-produced commodity goods. There isn't really an incentive for the designers to collaborate with the cloners, because they'd be competing against their own product, and diluting the perceived quality. There's no evidence that collusion happens, but they're just about valuable enough, and easy enough to clone, that they're worth cloning. Of course if the originals are manufactured cheaply in Chinese factories, all bets are off - apparently it's fairly common for the factories to keep running 'overnight', making more copies outside the production agreement, which are *literally* indistinguishable, using mostly or entirely the same materials, but not sold through the normal distribution channels.
The markup on designer goods is much greater. The fact that you can buy cruddy clones of things does not in any way indicate that there aren't people out there doing it properly - the incentives are so big, it would make no sense if people with the capability weren't doing it.
As the Chinese economy booms, and native innovation grows, they will inevitably develop more of a culture and legal framework for respecting IPR. That's not going to eliminate the clones, but it'll probably reduce their prevalence. Until then, if you don't have a paper-trail, you never really know. If that bothers you (as it should with batteries, for example), the only thing you can do is buy from major retailers with significant reputations to lose if they're caught asleep at the switch.
But unless you can provide evidence that the designers are actually selling the designs to the cloners, I'm just not sure I buy it. They'll be cloned anyway if there's a market, so I can't really see why a manufacturer would have much interest in offering terms that the designer would find acceptable.