What kind of technical scheme can I apply for an invention patent?

1, which meets the requirements of "three natures", namely novelty, creativity and practicality. Novelty means that the object of patent protection has not appeared in the market, creativity means that the proposed technical scheme has outstanding substantive characteristics and remarkable progress on the existing basis, and practicality means that the invention can be manufactured or used and can produce positive effects.

Generally speaking, you can only apply for a patent for invention if it involves methods, formulas and the protection of products without fixed shapes.

3. If the functional structure change proposed in the original product is creative and practical, you can often apply for an invention patent, but it is best to apply for a utility model patent at the same time, so that the utility model can be used for early protection and as a back road.