The patent wasn't revoked. Blackbird can continue to collect from parties it has already sued who settled, and can sue new parties if it so chooses. The courts

The patent wasn't revoked. Blackbird can continue to collect from parties it has already sued who settled, and can sue new parties if it so chooses. The courts who hear those cases aren't required to respect the previous judgments -- the appeals court ruling even says "Note: This disposition is nonprecedential" right at the top. And even if courts would potentially find the previous ruling at least persuasive, respondents would still have to undergo significant court costs just to mount a defense, and many will still choose not to do so and instead to settle, which Blackbird knows.