We have a contractor threatening a lien on our property over a disputed invoice for which appears to be excessive and for which insufficient details have been provided. Further, we recently learned state law requires this person to have a GC license and he does not. If he proceeds with the lien filing, it is unlikely he will sue or even if he does that he will prevail. A lawsuit is required in our state to perfect a lien. What happens if the lien is not perfected?