The lawsuit is thought to centre on a deal PepsiCo has signed with restaurant owner Tricon, which owns the Taco Bell, KFC and Pizza Hut chains in the US.
Dr Pepper/Seven Up argued that PepsiCo's deal with Tricon restricts the use of its drinks in Tricon-owned restaurants.
If you have an opinion on this or any other issue raised on Brand Republic, join the debate in the .