On December 31, Unified filed a petition for inter partes review (IPR) against U.S. Patent 7,020,252 owned by well-known NPE Uniloc 2017 LLC.  The ‘252 patent, directed to group voice messaging, has been asserted against Hike, Microsoft and Apple. 

 View Uniloc's assertion of this patent in district court litigation.  To read the petition and view the entire case proceeding, see our PTAB Portal.