Blonder–Tongue Laboratories, Inc. v. University of Illinois Foundation, 402 U.S. 313, 91 S.Ct. 1434, 28 L.Ed.2d 788 (1971), holds that, if a previous action invalidated a patent after the patent-holder had a full and fair opportunity to litigate, collateral estoppel prevents the patent-holder from enforcing the patent against an unrelated party in another action.
A review of Iatric System confirms (1) that FairWarning responded (without requesting a hearing) to Iatric Systems's motion to dismiss, which challenged the '500 patent's validity, and (2) that the order dismissing the action both considered and rejected FairWarning's arguments.
Regardless of collateral estoppel, for the same reasons explained in Iatric Systems, FairWarning fails to state a claim for infringement of the ‘500 patent, which is “directed to” nothing more than a patent-ineligible abstract idea. FairWarning asserts neither a fact nor an argument that warrants a different conclusion in this action.