<a href="http://www.cnet.com/news/apple-says-purple-iphone-concept-predates-sonys-art/" rel="nofollow">http://www.cnet.com/news/apple-says-purple-iphone-concept-pr...</a><p>Samsung argued that Apple used the Sony designs for the Walkman and a prototype phone as a basis for the iPhone. Apple claims their Purple project predates the Sony prototype.<p>Apple once sued eMachines over the eOne that looked like the G3 iMac, citing a trade dress issue. It was an all in one design where the monitor had the computer in the case and it had round edges.