According to the provisions of Article 25 of the Patent Law of People's Republic of China (PRC), no patent right is granted for the following items:
(1) scientific discoveries;
(2) rules and methods of intellectual activities;
(3) Methods of diagnosis and treatment of diseases;
(4) Species of animals and plants;
(5) substances obtained by nuclear transformation.
The production method of the products listed in Item (4) of the preceding paragraph may be granted a patent right in accordance with the provisions of this Law.
The landlord's mathematical formula belongs to the category of "laws and methods of intellectual activities" The rules and methods of intellectual activities guide people's thinking, reasoning, analysis and judgment, and have the characteristics of intelligence and abstraction, and do not make use of natural laws, so patent rights cannot be granted.