Details of Morotola Mobility(Google) patent lawsuit
techcrunch.com
techcrunch.com
These patents were filed between 1998 and 2002 with issue dates in 99,02, and a couple in 06.
My belief (which clearly isn't shared by a lot of folks) is that during the late 90's a lot of 'obvious' stuff got patented because the examiners didn't have the technical chops to know better. And then a lot of that same stuff got built into systems later because people coding them made the assumption the stuff was obvious and thus not patentable. And we ended up here in infringement city.