Does Kit Kat's Shape Deserve a Trademark? E.U. Adds a Hurdle. - The New York Times

Kit Kat case: The food and drinks with trademarked shapes - BBC News

Mondelez International Inc. - The New York Times

Trademark Registration & Business Consulting Firm - LawyerMom PH

Kit Kat loses trademark court battle over shape of bar in Europe

Nestlé risks KitKat imitators after losing EU trademark

Nestlé risks KitKat imitators after losing EU trademark

No break for KitKat in Europe as trademark request rejected

Trademark Registration & Business Consulting Firm - LawyerMom PH

KitKat maker Nestle can't trademark famous four-finger shape in EU

Nestle tries to trademark the Kit Kat shape in England -- fails

Kit kat - Food