In all fairness to Google/Android...Apple has copied some innovative features and implemented them (or soon will be) into the iPhone...so their claim isn't 100% flaccid.
Where the issue falls is that people have to acknowledge that ALL of the companies do this to each other. Every one of them has filed some kind of suit for whatever reason claiming this feature is their patent or that feature is their patent...and in the end, they all end up using each others technology regardless, and nobody really comes out any better for the law suits.
They do it to draw attention, and create "buzz", realizing that 99.9999% of the time, their efforts are moot because the things they are trying to get courts to side with them on are so generic, they're usually either laughed out of the room or given a tiny little compensation to basically say "Tough sh*t guys, move on."
In the end, all of the companies will be using each others "innovations" because no ONE company is going to figure it all out perfectly the first time to claim it as their own...its all about creating a tool and then refining it to your own standards and making it as close to "your own" as you can...
...and then suing the guy next to you that made the same tool with an optional piece on it because you're upset that you didn't think of that first...it's the American dream!