The infringement determination stipulated in China's patent law is based on the principle of comprehensive coverage. A cup has five technical features, one of which is about the handle of the cup. Others have removed this technical feature about the handle of the cup and made it. A cup without a handle, which does not fully cover all the technical features of the patent, does not constitute infringement. But it is not possible to apply for a new patent, because all the technical features in the new application have been disclosed in earlier patents, so he cannot apply for a patent. If you add a technical feature to someone else's patented cup and add a cup handle, you can apply for a patent, but whether it can be authorized depends on whether your quilt with a handle can satisfy the novelty and creativity of a cup without a handle. .