> And I'd bet that the contracts (i.e. 'licenses') that they've agreed to thus far have a clause that prevents the licensee from seeking a refund should the pat

> And I'd bet that the contracts (i.e. 'licenses') that they've agreed to thus far have a clause that prevents the licensee from seeking a refund should the patents ever be found invalid. The licensees probably get a blanket license to all of Microsoft's patents. That's what the lawyers always demand in any patent settlement. Thus, the loss of this one patent is immaterial anyway.