The first step of the petition involved finding the "Confirmation Number" in the USPTO's PAIR system. From here I was able to find out that the filing status is

The first step of the petition involved finding the "Confirmation Number" in the USPTO's PAIR system. From here I was able to find out that the filing status is "Abandoned -- Failure to Pay Issue Fee". Also of note is the fact that the status was set to "Abandoned" only after the "Notice of Allowance and Fees Due" was allowed to expire. The fact that the USPTO granted preliminary approval to this patent application is troubling.