Patent lawsuits start out the same way: company X hurls a slew of infringement allegations at company Y, the court demands that the fat be trimmed, and the case's scope is distilled so that only the strongest claims remain. Microsoft's ITC patent case against Barnes & Noble is currently in the midst of this streamlining process, and the parties have agreed to drop claims from four of the patents at issue and eliminated one patent from the proceedings altogether. A full accounting of all the bits of IP that have been eliminated can be found at the source link below.