BlackBerry-maker Research In Motion (Nasdaq: RIMM) has been forced to change the name of its new operating system from BBX after the company lost a trademark ruling.

The name change is the latest in a string of bad news for the Canadian company, which operates a research and development office in Durham, N.C.

Jamie Ernst, a representative of Waterloo, Ontario-based Research In Motion, said the company doesn’t typically comment on pending litigation.

“However RIM has already unveiled a new brand name for its next generation mobile platform,” Ernst said in an e-mailed statement. “As announced at DevCon Asia, RIM plans to use the ‘BlackBerry 10’ brand name for its next generation mobile platform.”

A U.S. federal court judge in Albuquerque, New Mexico, banned RIM from using the BBX name at a conference being held in Singapore this week after finding that software company Basis International Ltd. had registered and used the trademark for 26 years.

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