The battle in the US for beer sales between Anheuser-Busch and SABMiller has spilt into the courts.

SABMiller is alleging in a federal court that A-B is using false and misleading advertising while also defacing Miller Lite products with Bud Light stickers.

The case revolves around an advert that A-B ran in USA Today, which it is also using at retail outlets, that called Miller Lite the "Queen of Carbs". A-B said that Miller Brewing was too focused on carbohydrate content while it instead would focus its efforts on taste. It also described Miller as South African-owned.

Miller's says the "Queen of Carbs" phrase has consumers confused, because Miller Lite has less carbs than Budweiser and Bud Light. It also said that SABMiller was not South African but UK-based.

Anheuser-Busch denied both the allegations.