21 SRL [NPE] filed suit against Ulta Salon over a patent related to organization of customer information databases for websites.  21 SRL has filed four prior suits since December 2008 against over 15 defendants including Apple, Best Buy, Dell, and Walgreens. Giovanni Sacco is the named inventor on the patent-in-suit.  10/11, Northern District of Illinois, 1:2011cv07151.