U.S.Court Blow for RIM

Blackberry-maker Research In Motion (RIM) has suffered a court setback in a long-running patent row that could lead to it shutting down its US operations.

The US Supreme Court has refused to hear the Canadian-based group's appeal against a patent infringement ruling.

This ruling found that RIM infringed on patents held by NTP, a small technology firm from Virginia.
RIM now faces a possible injunction which could block the use of the handheld wireless device in the US.