Parallel Iron [NPE] filed suit against Amazon, Groupon, Hulu, Samsung, Twitter, and eight others over a patent related to storing data across multiple servers and machines without compromising ease of access.  Parallel Iron filed one prior suit in January 2011 against seven defendants including AOL and IBM.  The patent-in-suit originated with Ring Technology before being transferred to Parallel Iron in March 2010.  9/9, District of Delaware, 1:2011cv00799.