Looks like at legal battle is ensuing between the Big Blue and the Big Red, as iPhone carrier AT&T has kind of taken offence to Verizon’s “There’s a Map for That,” campaign reports an article over on pcworld.

AT&T is suing Verizon claiming their advert is misleading, and apparently resulting in loss of “incalculable market share.” The Ad shows that Verizon has five times more 3G coverage than AT&T, and while AT&T doesn’t claim that 3G info is wrong, but it doesn’t take into account AT&T’s 2G network and thus misleads.

Not too sure how this one will pan out, AT&T has asked for an injunction to prevent Verizon from continuing with the campaign, but the fact that AT&T is suing Verizon has brought quite a bit of attention to the campaign, which is probably something AT&T didn’t want in the first place.