Research In Motion (RIM) is suing Motorola over several patents used for wireless devices such as RIM's BlackBerry e-mail devices and Motorola's Razr smartphones.
The latest shot was fired by RIM, which filed off a suit alleging that Motorola has violated licensing commitments.
The Canadian company's filing came one day after Motorola filed a suit against RIM, claiming it violated some of Motorola's patents.
RIM is asking a court in Dallas to declare Motorola is breaching commitments it made to license essential patents to competitors on a fair and reasonable basis.
Read the full article here.