In the area of industrial design, there a kazillion pieces of furniture sold in every store that are pretty straightforward knock-offs from a "design classic". For example, you probably can see a chair that looks pretty much like this in any furniture store today. It's the Ant Chair, original design by Arne Jacobsen - original products cost 300 euros, chinese copies "inspired by it" are €30.
Cease and desist orders are typical first measures. They're often enough to scare individuals stopping what they are doing, even though they only say that "We see what you're doing and don't like it, kid!".