Legal basis: There are three kinds of patents in People's Republic of China (PRC) Patent Law: invention, utility model and design. "Invention" refers to a new technical scheme for a product, method or its improvement, "utility model" refers to a new technical scheme for the shape, structure or combination of products, and "appearance design" refers to a new aesthetic design for industrial application for the shape, pattern or combination of colors, shapes and patterns of products. Notes on patent transfer: 1. Avoid blindly expanding the patent value-the pre-tender estimate of patent transfer should be based on the principle of being able to clinch a deal, otherwise the cooperation is likely to fail, and it is necessary to avoid quick success and instant benefit-patent transfer is a legal procedure, so it is recommended to entrust relevant people in the industry to carry out relevant operations and give priority to cooperation. It is important for patent development to be beneficial and contribute to society and life. A patented technology with a certain technical content and market capacity can only be technology before it is transformed into the productivity of the grand event. Therefore, industrialization is the highest standard for the benefit of society and mankind. It is very important to record the transfer process as much as possible. Before the transfer, don't easily carry out operations such as value evaluation, especially according to the requirements of the other party. If it is really necessary to make an assessment, make clear the principle and proportion of the assessment fee as far as possible, and don't easily deliver technical data and related drawings and other specific materials before the handover procedures are completely completed.