Canadian beermaker Labatt Breweries said it may take legal action against the National Hockey League after it gave rival brewer Molson Coors an exclusive beer sponsorship deal.

Labatt, part of Anheuser-Busch InBev, said it had begun negotiations with the NHL several months ago to extend their arrangement “in good faith” and that both parties had agreed on the terms to renew the deal through 2014.

As part of the deal, Molson Canadian would be called the “Official Beer of the NHL.”