This document outlines the 18th draft of the Rules of Procedure of the Unified Patent Court. It provides a history of revisions to the draft Rules, from the initial draft in May 2009 to the current 18th draft from July 2015. It describes the various drafts that were discussed by expert committees and preparatory committees during the revision process. It also includes abbreviations and a table of contents that outlines the structure and sections of the 18th draft Rules of Procedure.