The UK subsidiary of rival chocolate manufacturers Nestlé and Mars were at London's High Court yesterday [Wednesday] arguing over Nestlé's fight to register the phrase "Have a break" as a trademark. Nestlé, which makes the KitKat chocolate bar, wants to have the phrase recognised as a registered trademark to prevent rivals from making a chocolate bar called "Break" or "Have a break" that might lead consumers to think that the new bar is related to KitKat.