Dulces Anahuac of Mexico sells salt-flavored lemon candy under the trademark LIMON 7. It also apparently still makes candy cigarettes, but that’s another story. It granted an exclusive license to Salt of the Earth to sell LIMON 7 candy in the U.S. You can read from the complaint here, via Amlaw.com, how the deal went sour.
This case illustrates the sad but true practice pointer that when you are drafting a license agreement, you have to visualize your client suing the other side some day.