An important US trademark case (Burger King of Florida, Inc. v. Hoots (1968)) also involved Burger King: http://en.wikipedia.org/wiki/Burger_King_(Mattoon,_Illi

An important US trademark case (Burger King of Florida, Inc. v. Hoots (1968)) also involved Burger King: http://en.wikipedia.org/wiki/Burger_King_(Mattoon,_Illinois) http://en.wikipedia.org/wiki/Burger_King_(Mattoon,_Illinois) The court ruled that federal trademark registration had priority over state law, and that the big chain Burger King had rights to the “Burger King” name everywhere except in Mattoon, Illinois. Since the Hoots family had prior actual use there, they retained the name for the Mattoon area.