The patent rights:
(1) extend only to acts done for industrial or commercial purposes and in particular not to acts done only for scientific research;
(2) not preclude a person having the rights referred to in Section 83 or a licensee from exploiting the patented invention;
(3) not extend to the presence of use of products on foreign vessels, aircraft, spacecraft, or land vehicles which temporarily or accidentally enter the waters, airspace or territory of Sri Lanka (Section 82).
