Originally Posted by fjtorres
Apple spent a great deal of time and money getting those animations to look just right.
How on earth though can this patent demonstrate their lovingly-crafted animation?
It has just three intermediate states, with no real description of the nature of the page turn effect. In fact, about the only thing that the patent includes is a note to say that the nature of the process and pacing of the animation is not specified.
What's more those three states as specified do not appear to match the iPad page turn itself.
Here are the three images in the patent:
And here's a YouTube video showing the iPad page turn:
Pause at, say, 12 seconds in and you can see that the angle of the turn is deeper on the iPad, crossing more of the page:
So, Apple don't appear to be trying to patent their exact design, but rather something more general.
What's more, there's a transparency effect used on the iPad as the page turns. which is not mentioned in Apple's patent, but which is described in Microsoft's earlier application for its Courier patent.
And as others have said, there's loads more prior art going way back.