"Many press reports and blogs in the last week have implied errors in their coverage of Visto's legal action, including the notion that Visto is suing Microsoft for patent infringement using the intellectual property that Visto had licensed the day before from RIM antagonist NTP. Though I haven't been involved in Visto for many years, I do know that Microsoft is actually infringing Visto's own, original patents--I know this because at least one of those patents has my name on it."
He includes a link to the patent in question, but the USPTO is returning an error right now. :?