It seems pretty clear that the state case impacts the federal case. Consider the statement "At the same time, a trial currently scheduled for November in state court will resolve the ownership dispute between the Plaintiffs over the patent-in-suit" is part of the justification given to the court for the 90 stay, it seems fairly clear that there was a probability of a request for an additional extension as soon as the state court trial date was moved back from November. The bigger question is, why hasn't anyone filed for the additional time yet?
In any case, I will make a SWAG that you will see some minor insider action (buys) concurrent with the request for an additional stay. PR by Form 4 showing management still has confidence in the company. Just a guess. I won't ask anyone to kiss any part of my anatomy if I am right.