BRUSSELS : Formula One's U.S.-based owner Liberty Media's planned takeover of MotoGP's parent company Dorna will be decided by EU antitrust regulators by Dec. 19, a European Commission filing showed. Liberty Media said in April that it would acquire about 86 per cent of Dorna, with Dorna management retaining around 14 per cent of its equity, giving the deal an enterprise value of 4.2 billion euros ($4.45 billion) for Dorna/MotoGP and an equity value of 3.5 billion euros. The EU executive, which