Gunze Plastics Engineering filed an action for declaratory judgment against Landmark Technology [NPE], seeking declaration that it does not infringe three patents related to exchanging business data with trading partners for ordering and receiving goods.  Landmark has filed over a dozen prior suits since September 2008 against over 50 defendants.  According to the complaint, Landmark is the exclusive licensee of the patents-in-suit, two of which received reexamination certificates confirming the validity of all claims and allowing 22 additional claims.  5/18, District of Kansas, Judge J. Thomas Marten, 2:2012cv02297.