Things just got a little more heated in the RIM / Kik dispute: RIM's now filed a Canadian patent infringement case against the company, just days after it pulled Kik Messenger from BlackBerry App World due to "breached contractual obligations." We don't have the complaint yet, so we're not sure exactly what RIM's patent covers, but it's a fair bet to say it's likely messaging-related -- and it's probably a safer bet to say that RIM doesn't screw around wh
