What are the reasons for invalidation of patent application?

Legal analysis: the reasons for invalid patent application are: 1, the object of patent is unqualified, that is, the invention-creation applied for does not belong to the scope of invention, utility model and design; 2. Inventions and utility models that have been granted patent rights are not novel, creative and practical; 3. Other reasons why the patent application is invalid.

Legal basis: Article 2 of the Patent Law of People's Republic of China (PRC) Invention-creation as mentioned in this Law refers to inventions, utility models and designs. Invention refers to a new technical scheme proposed for a product, method or its improvement. Utility model refers to a new technical scheme suitable for practical use for the shape, structure or combination of products. Appearance design refers to a new design with aesthetic feeling and suitable for industrial application based on the shape, pattern or combination of products and the combination of colors, shapes and patterns. Patent types have different regulations in different countries. The categories stipulated in China's patent law are: invention patents; Patent for utility model; Design patent.