The technical solution consists of multiple technical features. To determine infringement, one needs to compare other people’s products with one’s own claims. If the technical features in other people’s products already include any of the technical features in one’s own claims, All technical features of the right are considered infringement, and this is the principle of full coverage. Regarding those with the same function and different structures, it involves the principle of equivalence determination and specific treatment of specific situations, which cannot be explained clearly in one or two sentences.