A shameless knock off copies _everything_. A shameless rolex copies everything from a rolex. Rolex doesn't copy anything from their knockoffs. There has to be one way copying to classify a product as a knockoff. Instead, Apple has copied many features from android, so it's not a case of samsung / android being knockoff products. If anything, consumers have benefited from copying! Everyone complained about iOS notifications, then they copied android notifications. And consumers benefited. The fact that we are even having this discussion is nauseating. It's painfully obvious what the outcome should be in terms of what's best for consumers. A rich ecosystem which combines copying with innovation.
Yes, it's quite a bit like that old saying about pornography "I know it when I see it". But that hardly changes the point that there is no reform that can both prevent such suits and protect our interests as consumers.
There are products coming out of China that are counterfits, or very close to existing products - and they should be banned.
You would have to be both blind and stupid to not be able to tell the difference between any two Android and iOS phones.