About whether applying for a patent is appearance or invention, utility model issue

This is an improvement of the technical solution

If the improvement is significant enough, you can apply for an invention patent

If the improvement is not very significant, you can apply for a utility model patent

At the same time, if this improvement has aesthetic significance, you can also apply for a design patent

For example, a piece of paper originally only has the function of writing, and you add fan ribs to make it a If it becomes a fan, it cannot change its purpose. If this improvement is meaningful enough, that is, the fan has not been used before, then you can apply for invention and utility model patents at the same time. In this way, you will be granted a utility model patent first, and then apply for an invention patent. If reviewed, you can also be granted an invention patent, giving you a longer patent protection period. At the same time, if the appearance of the fan has good aesthetic features, you can also apply for a design patent