Does the context apply? Lets say you saw a really cool operating system from Bell Labs called UNIX but they were all pissy about trademarks and licensing fees so you made your own that, to the user is similar enough that you don't have to learn a bunch of new syntax or command options, but to avoid AT&T's lawyers from being confused that maybe you ripped off their code you call yours Linux.
Cheerios from P&G, Honey-Os from Trader Joes? Dr Pepper from the Dr Pepper/Snapple folks or Dr Skipper from the kind folks at Safeway?
And really who is the "good guy" and who is the "bad guy" here? In all of the product "rip offs" in the US and in China they are significantly cheaper than the 'branded' version. So consumers have a choice, the widget made to the 'brand's level of quality or one made as cheap as possible. And a lot of consumers go for the cheap ones. That is why I see a bunch of Comkia Ipad chargers rather than Apple ones.
The fact that a lot of this originates in China has, in my opinion, more to do with the fact that things are manufactured there, rather than the fact that they are Chinese. Even before the great American manufacturing diaspora there were US manufacturers making "cheap knock offs" of various kinds of things. Here in the land of Right and Legitimacy. Basically, there are a lot of American consumers that go for 'cheap'. And there appears to be a lot of Chinese consumers who want the "look" of an expensive brand but they don't want to pay a premium for it. So they get it from the shop owned by an uncle or something.
Now I am the first guy to cry "Foul!" when someone steals the plans to a system that took a long time to develop and then sets up manufacturing without having to pay any development costs. But if factory B goes out and buys a widget that Factory A made, takes it apart and figures they can make it cheaper and they will be sure that people know it isn't a Factory A widget its a Factory B widget? That is just regular competition.