This presentation was delivered during the joint DPE/Planets/CAPAR/nestor training event, ‘The Preservation challenge: basic concepts and practical applications’ (Barcelona, March 2009). It is aimed at presenting the fundamental problems related to the preservation of intellectual property material, and how some of these problems have been addressed in CASPAR.The objective is to present CASPAR approach to the problem of identifying and preserving all the existing rights related to a digital work.