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

Nestle's Fight to Trademark the Kit Kat Bar

Nestle Loses Battle to Trademark KitKat Shape

Nestlé risks KitKat imitators after losing EU trademark

Mondelez International Inc. - The New York Times

Nestle Loses Battle to Trademark the “Kit-Kat” Design in the U.K.

Kit Kat case: The food and drinks with trademarked shapes

Nestlé Loses EU Kit Kat Trademark - SnapDragon

Who, What, Why: Can the KitKat shape be a trademark? - BBC News

Kit Kat loses bid to trademark four-finger shape – DW – 07/25/2018

Nestlé loses high court battle to trademark shape of KitKat

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

Kit Kat case: The food and drinks with trademarked shapes

In Japan, the Kit Kat Isn't Just a Chocolate. It's an Obsession

Nestle vs. Cadbury (2013) Trademark Lawsuit Case Study