The earliest application record of utility model patent in the world belongs to oxaliplatin registered by Samuel Hopkins in the United States on1July 3, 9701790.
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. In China, there are three kinds of patents: inventions, utility models and designs.