Nov. 4, 2009 (United Press International) -- U.S. telecommunications giant AT&T (NYSE:SBT) (NYSE:T) is suing rival Verizon (NYSE:VZ) for commercials that suggest there are gaping holes in AT&T's service coverage, court papers say.

Verizon ads that claim "There's a Map for That," are the focus of a lawsuit filed in a federal court in Atlanta, The Dallas Morning News reported Wednesday.

AT&T is not disputing Verizon's 3G coverage is more extensive than theirs, but the ads show maps with blank spaces where AT&T has 2G coverage. The blank spaces, however, imply that AT&T does not have any coverage in those areas at all, the lawsuit says.

"White space always represents no coverage," AT&T spokesman Mark Siegel said.

Verizon Wireless spokeswoman Audrey Lundy, "we stand by the map," shown in the ads.

"If they have a better map, we'd like to see it," she said.

The ads are also a take-off of iPhone advertisements that use the catch phrase, "There's an App for that," referring to applications available for the smart phone.

AT&T has an exclusive deal with Apple (NASDAQ:AAPL) , makers of the iPhone, tying the phone to AT&T's services.