A more thorough explanation:

Definition: A patentor is someone who grants a patent.

Example: The United States Patent and Trademark Office (USPTO) is a patentor. They grant patents to inventors who have created something new and useful.

Explanation: The USPTO is an example of a patentor because they have the authority to grant patents to inventors. When an inventor applies for a patent, they must go through a process with the USPTO to prove that their invention is new and useful. If the USPTO approves the application, they become the patentor and grant the inventor the exclusive right to make, use, and sell their invention for a certain period of time.