Maybe I aren't (word used on purpose) smart enough to know better, but isn't this like Ford suing GM to stop using their "design" for a car?
More or less a same argument.
So Apple applies for and receives a patent for something that has been done for years by several parties, that art is something fundamental towards graphic interfaces, and then Apple turns around and uses that patent to try and force competitors off the playing field.
Similar problems exist with genetic technology patents. The patent examiners often just don't understand what is novel and what is prior art and grant patents that are just too sweeping - the patent ends up ecompassing what is novel AND the prior art used to create what is novel in the application.
It is more like GM contracting to build F-150’s then make a few extra and label them GMC Trucks.