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A patent is valid for 20 years from the date of application. The patent must be renewed annually from the expiration of the second year from the date of grant paying a fee ( refer to the regulations).
What is not patented: Such things as (i) discoveries, scientific theories and mathematical methods; (ii) plants, animals micro organisms other than transgenic micro organisms and an essentially biological process for the production of plants and animals other than non biological and micro-biological processes; (iii) schemes, rules or methods for doing business, performing purely mental acts or playing games (iv) methods for treatment of human or animal body by surgery or therapy and diagnostic methods practiced on human or animal body (v) inventions which are necessary to protect public order, morality including human animal or plant life, health, or to avoid serious prejudice to environment.
What is not patented: Such things as (i) discoveries, scientific theories and mathematical methods; (ii) plants, animals micro organisms other than transgenic micro organisms and an essentially biological process for the production of plants and animals other than non biological and micro-biological processes; (iii) schemes, rules or methods for doing business, performing purely mental acts or playing games (iv) methods for treatment of human or animal body by surgery or therapy and diagnostic methods practiced on human or animal body (v) inventions which are necessary to protect public order, morality including human animal or plant life, health, or to avoid serious prejudice to environment.
