Not really. From the point of view of someone not into cars, Porsche and Corvette have differences and similarities, but only by looking at the brand name on the car you know which one is which. Similarly, someone knowledgeable about smartphones can tell an iPhone and a Samsung Galaxy apart even without reading the brand name (that is nonetheless well visible on Samsung phones). I haven't heard about Porsche suing Corvette because they have copied the design and users may be deceived, and I don't expect the same happening about smartphones.