(1) Regarding the first question, according to the guidance of China’s patent system, citing references in patent specifications is encouraged, because this can give examiners, judges and the public a better understanding of the invention. background, and the technical problems to be solved by the present invention.
(2) Regarding the second question, the formulas in the patent documents may be formulas in common knowledge, and their purpose is to better explain the present invention. In the patent system, there are no restrictions on the citation of formulas in patent specifications.