I want to make something clear to those who think that defending IP is akin to not being able to innovate. Don't bother responding to this, I'm not subscribing to this thread to waste more time arguing. I just want to make my point. If you like it, fine.
Also, bear in mind that I'm not talking about this specific case, but in general.
For one thing, it's unethical to basically steal someone's idea and sell it. Aside from that, suing to protect your IP is NOT anti-innovation. It's PRO-innovation. Why? If you don't sue to protect IP, you allow a competitor to basically make almost the exact thing that you made. What is innovative about that? By suing them you force them to change their productto make something different. And that's what they should have done in the first place. That's upholding innovation. If you can't create something better, you copy what you see. That's not innovation. Anyone who thinks otherwise is deluded.
I don't know where many people on here have the opinion that IP and ethics don't matter. Yes, there's something to be said about just making something new and better as a response to a copycat. But that new thing will just get copied too. In the end, there's only innovation from one company and not the entire market, which is not how it's supposed to work.
There is one problem with your point. And it's a big one. So far Apple basically lost all their lawsuits. Most their patents used in the lawsuits have been invalidated. Compare this to the cases that they lost (to Nokia - settlement by paying tons of money and Motorola). And now we learn that they started using patent trolls (Digitude) for doing their dirty business. Also, being a patent midget that Apple is, they do sue too much.