U.S. Patent and Trademark Office allows Cubaexport to register the name Havana Club is Cuba's most iconic rum Havana Club rum sales are soaring in Cuba now that Americans are allowed to bring home a combine total of $100 of alcohol and tobacco products. A two-decades-old battle over who has the right to use the Havana Club trademark in the United States played out quietly at the U.S. Patent and Trademark Office this week with the decision that the rightful owner is a Cuban government company.