I recall seeing this headline elsewhere, but the commenters in the thread were talking about how misleading it is. If I recall correctly, what's patented is not a shape, but the entire three-dimensional shape and design of the first-generation iPad, including the location of the speaker slots, microphone slots, brightness detector, volume button slot, the whole deal, and that pretty much every corporation does the same for their products. I can't be bothered to do the research (I really don't care), but regardless, the whole "round rectangle argument" will never hold up in a non-biased court, patent or no patent.
That being said, the patent system is incredibly silly and needs to be rebuilt from the ground up. It was always intended to prevent the big guys from stealing the little guy's design. Now it's just used by the big guys to litigate the little guys out of business.