When it comes to UIs, many different UI toolkits exist such as Qt, GTK, Motif, and UIKit. So I would be surprised if it turned out that common features of UIKit which appear on many platforms as well were patented by Apple. But I have to ask: Are these basic classes covered by patents:
- UINavigationController = horizontal layout of UI screens
- UIScrollView = scroll UI elements within a touch-sensitive zone
- UITableView = vertical list of items with touch response
There are equivalents of these on many systmes, including Linux and Windows and Android.