What is the nature of patent stability?

The stability of patent is reflected in the actual judgment of patent. A patent application, assuming that a product has 100 kinds of raw materials, can succeed in more than 10 kinds, then this 10 kind is stability. Although you may lose money, you can definitely make a product. If there is no product guarantee, sometimes none can be done, that is, it does not meet the practical terms, and it is judged that the technology cannot be implemented and it is not authorized.