Project patent refers to the research whose patent application is recognized by the organizer. Patent application is a process for patent groups to strive for research indicators, but each patent application has quota restrictions, and only a few patent topics can be approved and become approved patents. Optional patent refers to the patent of self-selected topic. Some of the application topics belong to self-selected patents, and if the application is successful, it will become one of the approved patents.
In modern times, patents are generally documents issued by government agencies or regional organizations representing several countries according to their applications. This kind of document records the contents of the invention and creation, and in a certain period of time, it has produced such a legal state that the patented invention and creation can only be implemented by others with the permission of the patentee.