This page provides information on the types of patents and types of patent applications, and the examination process. Patent Center Overview provides details on how to file an application in Patent Center.Quick Clinic Video Series. In a patent license agreement, the patent owner grants another the right to use, make, or sell the patented invention without worrying about infringement. This collection consists of Virginia land patents (16231774) and land grants (1779February 2000). Here you will find some highlights of innovation from Virginia's history starting in the 1800's through the present. Has the alleged patent troll sued you for patent infringement?