https://patentbrief.org/company/research-in-motion-ltd Plain-English explanations of patents assigned to Research in Motion Ltd, newest first. en-us Sun, 12 Jul 2026 11:10:51 GMT https://patentbrief.org/patent/us/8219158/handheld-wireless-communication-device This 2012 patent describes a handheld device, like an early BlackBerry, with a QWERTY keyboard and a trackball, focusing on the physical arrangement of keys around the navigation tool. Tue, 10 Jul 2012 00:00:00 GMT https://patentbrief.org/patent/us/8219158/handheld-wireless-communication-device