[an error occurred while processing this directive]
BBC News
watch One-Minute World News
Last Updated: Thursday, 23 February 2006, 11:45 GMT
Minor victory for Blackberry firm
Three people using Blackberry mobile device
Blackberry devices are used by three million people in the US
The US firm accusing Blackberry-maker Research In Motion (RIM) of copying its technology has had one of its claims rejected by the American patent office.

Officials at the US Patent and Trademark Office issued a final rejection of one of the five disputed patents owned by NTP.

It comes ahead of Friday's core court case when a US judge will decide if RIM has to shut down its service in the US.

NTP won such an order in 2003, but it was not enforced so RIM could appeal.

The crunch final decision - which could force RIM to halt Blackberry sales in the US - is now in the hands of the presiding judge in the case, US District Court Judge James Spencer.

The Patent Office's move is the first final decision on any of the disputed patents - although it has previously rejected all five on a "non-final" basis.

Long-running battle

Switching off the Blackberry service in the US would affect more than three million users.

Canada-based RIM said recently that it was negotiating with NTP, but described the US firm's offer to license the disputed technology as "untenable".

The tussle between the two companies dates back to 2002, when patent-holding company NTP successfully sued RIM in a lower court.

Earlier this month the US government asked a federal judge to hold off from a possible shutdown of the Blackberry service because of the system's popularity among key government employees.




SEE ALSO:
Blackberry plan to avoid shutdown
09 Feb 06 |  Business
Washington steps in on Blackberry
02 Feb 06 |  Business
Court blow for Blackberry maker
23 Jan 06 |  Business
Patent worries fail to dent RIM
22 Dec 05 |  Business
Court blow for Blackberry maker
30 Nov 05 |  Business
Blackberry patent threat upheld
07 Oct 05 |  Business


RELATED INTERNET LINKS:
The BBC is not responsible for the content of external internet sites


PRODUCTS AND SERVICES

Americas Africa Europe Middle East South Asia Asia Pacific