A master license is a legal agreement that allows one party, known as the licensee, to use, produce, or sell a product or service under the brand of another party, known as the licensor. This type of license often covers a broader territory or multiple locations, enabling the licensee to grant sub-licenses to other businesses or individuals. Master licenses are commonly used in various industries, including franchising, software, and entertainment. They provide a way for companies to expand their reach while maintaining control over their brand and ensuring that quality standards are met by the licensees.