How to evaluate patent quality?

Patent quality can be evaluated according to three levels: understanding standard, authorization standard and award-winning standard. Understanding standard means that patent application documents only clearly introduce the invention content, which may not be authorized and it is difficult to obtain effective legal protection; Authorization standard means that the patent application documents meet the authorization conditions, but experienced lawyers can find defects within the scope of protection, thus successfully defending "pseudo-patent infringement"; The standard of winning the case means that the patent application documents are different from those of the predecessors, and it is difficult to be defended after constituting the elements of patent infringement. Therefore, the author must master various typical cases and predict the influence of various wording on the success or failure of patent infringement litigation in the future. Due to poor writing and lack of internal evidence, the patent protection that should be obtained sometimes cannot be recognized according to law, which is the poor quality of patents.