WiLAN has struck again. Having previously chased after BlackBerry for Bluetooth and SYM key patents in addition to CDMA patents, the company known for buying up patents and using them against others companies for profit has started litigation processes against BlackBerry. This time, their claim is for U.S. Patent No. 8,274,991 which relates to LTE mobile handsets or more specifically in this case, LTE enabled BlackBerry devices.

Wi-LAN Inc. today announced it has initiated new litigation claiming patent infringement in the Southern District of Florida against Research In Motion Limited ("RIM"), which is believed to be doing business under the name "Blackberry". The suit against RIM claims infringement of U.S. Patent No. 8,274,991 which relates to LTE-compliant mobile handsets.

BlackBerry is already among their list of licensees, along with Samsung, Nokia, Sony, ASUS, and Cisco. We'll see how this one pans out but in the past, BlackBerry has just agreed to settle on the matters at hand like many others.