How long after starting anticoagulation would you remove an IVC filter in a patient with a DVT presenting with stroke and PFO which is now closed?

This can be a complex scenario. The first question to ponder: if the patient could receive anticoagulation (a/c), why was the filter placed? Let us assume that there was a short period of time from the initial presentation of stroke, during which anticoagulation was contraindicated and there was a l...