“Utility model” means any new technical solution relating to the shape, the structure, or their combination of a product, which is fit for practical use.The product shape referred to in the patent for utility model refers to the definite space shape that can be observed. For products without definite shape, such as gaseous, liquid, powdered or granular substances or materials, the shape cannot be used as the shape feature of the utility model product. The utility model patent refers to the product structure and refers to the arrangement, organization and interrelationship of the various components of the product.

The utility model patent only protects the product, which shall be an entity made by industrial means and occupying a certain space. All relevant methods (including the use of the product) and naturally existing articles which have not been manufactured do not belong to the object of protection of the utility model patent; The utility model does not require too much creativity, but has strong practicability and great practical value. In the examination and approval of patent right, the utility model adopts simplified examination and approval procedure, fast authorization, short protection period and low charging standard.