International Patent Classification (IPC), Before filing for patent, the patent applicants should ascertain, that the subject matter in respect of which a patent is sought, does not fall under section 3 of the Indian Patent Act. A23C: DAIRY PRODUCTS, e.g. MILK, BUTTER, CHEESE; MILK OR CHEESE SUBSTITUTES; MAKING THEREOF (obtaining protein compositions for foodstuffs A23J 1/00; preparation of peptides, e.g. of proteins, in general C07K 1/00)