Invention refers to a new technical scheme proposed for a product, method or its improvement.
Utility model refers to a new practical technical scheme 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.
This is the scope of patent granting, and only these three innovations can apply for patents.
However, in order to be patented, the following conditions need to be met: the patented invention and utility model should be novel, creative and practical.
Novelty means that the invention or utility model does not belong to the prior art; Before the filing date, no unit or individual filed an application for the same invention or utility model with the administrative department for patent in the State Council, and it was recorded in the patent application documents published or announced after the filing date.
Creativity means that compared with the prior art, the invention has outstanding substantive features and remarkable progress, and the utility model has substantive features and progress.
Practicality means that the invention or utility model can be manufactured or used and can produce positive effects. The design granted the patent right does not belong to the existing design; Before the filing date, no unit or individual has filed an application with the patent administration department of the State Council for the same design, and it is recorded in the patent documents published after the filing date.
Compared with the existing design or the combination of existing design features, the patented design should have obvious differences.
Therefore, to obtain a patent, one must have an invention and creation, and the other is to apply for a patent.
As you said, if shoes were invented today, it must be a novel, creative and practical invention. If you apply to the Patent Office, I think you will be granted a patent.