Every American patent has an application number, an open number and an authorization number.
That is to say, comparative documents or documents that have been published in the database earlier.
Types of American invention patents:
1. American invention patents: methods, machinery, finished products or combinations of things, or new and effective improvements, can all be patented under the premise of this law.
2. American design patent: Anyone who creates a novel, original and decorative product design can obtain a patent according to the definition and requirements of this Law.
3. Patents of new plant varieties: the discovery, excavation and asexual reproduction of any special and new plant varieties.