Grant-back refers to the legal practice of returning rights to an innovation or intellectual property (IP) from a licensee to a licensor. This process allows the licensor to benefit from future developments or modifications made to the IP. However, there are several synonyms for grant-back, which can be used interchangeably. Some of the synonyms include reassignment, retransfer, return of rights, and reverting. These words convey a similar idea of returning or transferring rights, whether it is from a licensee to a licensor or from one party to another. Regardless of the term used, grant-back agreements are crucial in enabling licensors to maintain control of their patents or innovations while allowing licensees to use them to grow their businesses.