Verizon is not backing down in the face of a lawsuit filed by rival AT&T requesting that it pull ads comparing the coverage areas of the two firms' 3G networks, which AT&T said are misleading.

AT&T (NYSE: T), the nation's second largest wireless company and sole domestic carrier of the wildly popular iPhone, earlier this month filed a lawsuit charging that Verizon's "There's a map for that" ad campaign inaccurately portrayed its 3G coverage.

Verizon is not only refusing to yank the ads, but is also sticking by the promotional claims.

"AT&T did not file this lawsuit because Verizon's 'There's a map for that' advertisements are untrue; AT&T sued because Verizon's ads are true and the truth hurts," Verizon shot back in a court document. "AT&T now is attempting to silence Verizon's ads that include maps graphically depicting the geographic reach of AT&T's 3G network as compared to Verizon's own 3G network because AT&T does not like the truthful picture painted by that comparison."

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