The European Union's top court should cancel Swiss food giant Nestle's trademark for the shape of the Kit Kat chocolate bar, the court's top adviser said today.
Nestle has been locked in a decade-long battle with US rival Mondelez, maker of Cadbury chocolate, over the four-fingered wafer biscuit, which was first sold in 1935.
The EU's intellectual property office allowed Nestle in 2006 to trademark what the court calls the "three-dimensional shape of the 'Kit Kat 4 fingers' product".
Advocate General Melchior Wathelet said the European Court of Justice (ECJ) should dismiss an appeal by Nestle against a lower court's 2016 decision to annul the trademark.
"Nestle did not adduce sufficient evidence to show that its trademark had acquired distinctive character," Wathelet said.
He said the intellectual property office should now "re-examine" its decision.
The Luxembourg-based ECJ often, but not always, follows the advice of the advocate general, its senior legal advisor, when making its final judgement.
The food giant specifically failed to show that the Kit Kat shape was well enough known in
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