The content of an application for protection of a patent for invention refers to a new technical scheme proposed for a product, method or its improvement. Methods Inventions or products without fixed shapes can only apply for invention patents, but not utility model patents and appearance patents. The object of invention patent protection is the structure, method, formula and material of the product.
The content of the patent application for utility model is a new technical scheme suitable for practical use, which refers to the shape, structure or combination of products. The object of utility model patent protection refers to the product structure.
2. Duration of protection
The protection period of the invention patent is 20 years from the date of application; The protection period of utility model patent is 10 year from the date of filing. After the expiration, the patent becomes invalid, and the patent results become the intellectual wealth of mankind.
3. Review form
Invention patents need substantive examination, while utility model patents only need formal examination.