Despite legal woes and increasing pressure from rivals like Microsoft, BlackBerry maker Research in Motion sits on top of the PDA market with over 25% share according to analyst firm Gartner.

Research in Motion, maker of the popular BlackBerry devices, further extended its lead to 25 per cent of the overall PDA market, increasing shipments by 52.6 per cent year over year.

This is not too bad for a company that supposedly should be killed by every new PDA with email that comes out and that is about to be shut down by NTP over patent infringement on patents that the US Patents office says are invalid.