1. If the case is on appeal to the Court of Appeals for the Federal Circuit, it's too late to introduce new evidence of invalidity of the patent in suit (at least in the district court; you could try challenging the patent in front of the USPTO, but even if you are successful, that is not going to get your attorneys' fees back and won't affect what the Federal Circuit has to say.) You are basically asserting that "both sets of attorneys" (including one set who was not representing you in the...