Motorola Mobility claimed Microsoft had infringed upon five different patents in the original lawsuit, though four were eventually dismissed over the years. The fifth patent, which deals with peer-to-peer communication between two wireless devices, then became the focus of the case over the last few years.
The last year saw the most developments in the case, with ITC Judge David Shaw ruling in favor of Motorola in April of last year. Shaw then pushed for an Xbox import ban in the US the following month, only to have the ITC remand his decision and push it back to an administrative law judge for a second look. The suit then went through the process again, though Shaw ruled in Microsoft's favor the second time around.