Nestle's KitKat Bar

Nestle's KitKat Bar

Jason Adlen/Bloomberg

Cadbury, the U.K.’s biggest chocolate maker, opposed Nestle’s 2010 application to trademark the four-fingered chocolate, which sold 40 million pounds ($66 million) worth of bars a year between 2008 and 2010 in the U.K., Judge Richard Arnold said in a ruling.