Lol, they can argue all they like... I'll just continue to use both Android and Windows. Don't exactly care what these two companies think of each other.
That said, patent trolling is getting annoying. Apple managed to forbid Galaxy Tab sales in Australia (now poor Aussies have to import them, lol) - though what they should be scared of is not the Galaxy Tab, but the Galaxy S II and Asus Eee Pad Transformer, since these sell much better - and it shows just how much messed up the system is. Since when do Apple's patents extend to other countries? I might be missing something, but I think this is pretty much like that notorious case where Intel has been bribing manufacturers to preven AMD sales. Just in case with Intel, everyone went "bad, Intel, bad! Screw you and pay a fine!" and in case of Apple, which bribes authorities, no one cares.
After that kind of stuff, not much of a surprise that MS wants to do the same. And it's not like Google is a saint, either... Would be cool if Google would teach Apple a lesson or two when it comes to patents.