Trademark is a special legal term. A brand or a part of a brand is called a "trademark" after it is registered by the relevant government departments according to law. Trademark is a sign used to distinguish one operator's brand or service from other operators' goods or services.
Second, copyright.
Copyright is a legal term used to express the rights enjoyed by the creator because of his literary and artistic works. Copyright is the legal ownership of the right to copy computer programs, literary works, musical works, photos, games, movies and so on. Copyright only protects the expression of ideas, not the ideas themselves.
Three. patent
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.