Do drug patents belong to private property?

Where the patent right belongs to the patentee, it shall be protected by law. Patent right, referred to as "patent" for short, is an intellectual property right that the inventor or his assignee enjoys the exclusive right to exploit a specific invention within a certain period of time according to law. Patent right means that the patentee enjoys the exclusive right to use, benefit and dispose of his invention and creation within the scope prescribed by law, and excludes the interference of others.