A lis pendens is a notice that a lawsuit has been filed regarding either a dispute in ownership of real estate or some other claim of interest in the property. To file and record a lis pendens against real estate, the claimant must have made a "real property claim" in the underlying litigation.Where would I begin if I were to file myself? Is there a form to complete submit that I can get online? How do I fill this out? The first thing you need to do if and when you get sued is file an Answer. Next, provide a description of the real estate involved in the suit. Talkov Law's real estate litigators provide a free checklist of requirements to file a lis pendens (notice of pending action). A court shall order a lis pendens expunged only if it determines (1) the pleading on which the lis pendens is based does not assert a real property claim.