Following your example,
If the teapot and teapot lid both have technological innovations, it is best to apply in two separate applications to protect the teapot and teapot lid respectively, so that the three factories Infringement can be caught;
In addition, it can be written in the following way. The subject protected by claim 1 is a teapot component, and then it is divided into two subsidiary items to indicate that the teapot component is a teapot and a teapot. Lid, in this case, the technical innovation of the teapot and the teapot lid must belong to the same general inventive concept.