Black Hills Media [NPE] filed four separate suits against Logitech, Pioneer, Sonos, and Yamaha, alleging that the defendants’ audio products infringe three to eight patents (depending on the defendant) related to caching audio elements in a personal radio server system, network-enabled audio devices, and coordinating and synchronizing song playback.  These are the first patent infringement suits initiated by Black Hills Media.  The 6,985,694 patent originated with De Bonet Technology Partners and was assigned to Zamora Radio by Clix Network in April 2008.  The 8,045,952 and 8,050,652 patents originated with Audioramp.com and were assigned to Horsham Enterprises by Conpact in June 2010.  RPX reviewed these patents (Horsham-Concert) in December 2012.  The 6,757,517 and 7,236,739 patents were assigned to Synchronation in July 2007.  RPX reviewed these patents on the open market  (SynchroNation) in November 2011.  The 6,826,283 patent originated with 3Com and was assigned to Cordoba Enterprises by Conpact in March 2009.  RPX reviewed this patent on the open market (Cordoba-Concert) in November 2011.  The 7,742,740 patent originated with Tribal Technologies and was assigned to Synchronation in July 2007.  RPX reviewed this patent on the open market (SynchroNation) in November 2011.  The 8,028,323 patent originated with Musicstream and was assigned to Dryden Enterprises by Conpact in November 2011.  RPX reviewed this patent on the open market (Dryden Enterprises-Concert) in November 2011.  According to the complaints, Black Hills Media owns the patents-in-suit, but this assignment has not been recorded at the PTO.  5/22, District of Delaware, no judge yet assigned, 1:2012cv00634; 1:2012cv00635; 1:2012cv00636; 1:2012cv00637.