For patent applications in the chemical field, it is often the
case where an independent product claim only defines the components
included therein, but does not define the contents of the
components. In this regard, the examiner usually points out that
the contents of the components are not limited in the claims, and
only products including components with specific contents can solve
the technical problem to be solved by the invention, so the claims
cannot be supported by the description.
As to the above office action, it is important to consider
whether the substance or improvement of an invention is related to
the contents of the components when making a response. If the
substance or improvement of an invention lies in the components per
se, the solution to the technical problem only depends on the
selection of the components, and those skilled in the art can
determine the contents of the components according to the prior art
or by simple experiment, it is
