A lis pendens is an essential tool that provides notice of pending litigation involving a claim that affects title to real estate. A lis pendens is not a mechanics lien, but it is often required as part of the lien process.Remember that a lis pendens is a notice of a pending lawsuit. I need to file a Lien of Lis Pendens in Knox County Tennessee but I live in Phoenix Arizona. A lis pendens is a notice of a lawsuit recorded at the registry of deeds against the title to the particular property at issue in that lawsuit.