Klausner Technologies [NPE] filed suit against Microsoft, alleging that the Microsoft’s messaging services infringe two patents related to visual voicemail.  Klausner has filed over 35 prior suits against defendants including 8 x 8, Apple, Alcatel-Lucent, Cisco, HP, HTC, Motorola Mobility, NEC, Panasonic, Qwest, RIM, Samsung, Toshiba, Verizon, and Vonage.  Judah Klausner, the founder of Klausner Technologies, and Robert Hotto are the named inventors of the patents-in-suit.  1/23, Eastern District of Texas, 6:2012cv00032.