The initial scuffle, first filed in 2010, claimed that Microsoft had infringed upon five of Motorola Mobility's patents. Four patents were dropped from the case during the course of the proceedings, the last remaining patent covering peer-to-peer communication between wireless devices.
Originally, ITC judge David Shaw ruled in favor of Motorola and subsequently recommended a ban on Xbox imports into the US. Then, in June of last year, the ITC remanded the decision back to the administrative law judge and asked him to take another look, effectively starting the process all over again. His second ruling, this time in favor of Microsoft, was delivered last March and will be the final word on the subject, now that the ITC has declined the opportunity to review his decision.