If another person wants to use a trademark that they do not own, they can ask the trademark owner for permission. The trademark owner can grant the other person a license. The other person usually must pay some money to the trademark owner for the license. This can be in the form of a percentage of the cost of the product that the other person sells called a royalty. For example, a person might pay Nike ten percent (10%) of the cost of each pair of shoes it sells for the right to include the Swoosh.