Thing is though, Chanel can register their 2.55 design and prevent others from using it. They cannot, however, prevent others from making black quilted handbags (even if they are of similar dimensions). That is too generic of a claim, and not what design registrations are for (not that i have read up on rulings other than ones in national court, but still).
Design registrations are 99% about preventing fakes, and 1% about highly specific (non generic) techniques (that are crucial for the overall design) that in some ways are comparable to trade marks (one of the cases i've read over the years covered just that).
I truly fail to see how Apples filings qualify, and i hope im right in saying that neither will the court. No one other than Apple should be allowed to make an ipad, but as we all know a Galaxy or a Xoom is anything but just that. Similarities due to minimalistic design are just that, no one can have exclusive rights to minimalism - and once devices are on (and we all should be able to agree that devices are intended to be in "on-mode"), these similarities due to minimalism quickly goes away.
Before i leave for now, imagine this scenario if it was about leather jackets. Im quite sure there are design registrations for leather jackets - still you can walk in to pretty much every store and fine one (at least when they are in fashion), and with few exceptions they will all look pretty much the same (all following the trend).
Jesus christ, could you ever see anyone do this with say, a t-shirt? I bet the t-shirt "revolutionized" something back in the days, its a pretty neat garment. I can also safely bet that there (just like the case with leather jackets) are design registrations on t-shirts. "Strangely enough", you don't see many t-shirt producers hitting at other t-shirt producers "for selling a thin, short-sleeved shirt with various prints on chest". Why? Because that is not how the system (is intended to) works.