Parallel Iron [NPE] filed suit against Hortonworks, alleging that Hortonworks’ file storage systems infringe a patent related to storing data across multiple servers and machines without compromising ease of access.  Parallel Iron has filed two prior suits since January 2011 against 11 defendants including Amazon, AOL, Groupon, Hulu, IBM, Samsung, and Twitter.  The patent-in-suit was previously assigned to Ring Technology [NPE] before being transferred to Parallel Iron in March 2010.  1/30, District of Delaware, 1:2012cv00121.