Clothing maker seeks to enforce copyright.

A San Diego clothing manufacturer is suing Britney Spears for $10 million, claiming her use of the phrase "In the Zone" infringes its trademarks.

In the suit, filed Feb. 17 in the U.S. District Court for Southern California, Lite Breeze and its founder Rodd Garner contend that the use of "In the Zone" on Spears' multi-platinum Jive album of that name, as well as on DVDs and T-shirts, is unauthorized.

Lite Breeze also filed a cease-and-desist order the same day, attempting to ban Spears from using the trademark in her concerts, recordings and promotional campaigns. Also named as defendants are Clear Channel Entertainment Television, Jive and Signature Network.

The name of Spears' recent concert tour, which opened in San Diego last month, was changed to "The Onyx Hotel Tour" from "In the Zone Tour" after the suit was filed.

Charles Reidelbach, Garner's attorney, says Spears' use of "In the Zone" is confusing to consumers in the San Diego area. "When people who buy T-shirts think of 'In the Zone,' they think of Lite Breeze. But now they may no longer," says Reidelbach. Lite Breeze, which was formed 20 years by Garner, has owned the trademark since 1992.

Spears' lawyer, Peter Anderson, could not be reached for comment.