MEMBERSHIP INTEREST PURCHASE AGREEMENT by and among EPIQ SYSTEMS HOLDINGS, LLC, EPIQ SYSTEMS, INC. (solely for purposes of Articles V and IX and Sections 2.2(c), 6.1, 6.2, 6.6(a), 7.10, 8.1, 8.2, 8.4 and 8.5), DE NOVO LEGAL LLC, and THE SELLERS NAMED...