Apparently Microsoft has already stolen...excuse me...incorporated "multi-touch" into a preliminary version of Windows 7...I suspect there will be a lawsuit if Windows 7 comes with anything resembling the multi-touch features already found on the iPhone.
Multi-touch has been in development for approximately 25 years, and technically in the Apple Vs MS battle, MS struck first with the Surface, which was usable (if not purchasable) in April of 2007. The iPhone was available in June of that year. (http://en.wikipedia.org/wiki/Multi-touch)