25.
| (1) Where a patent has been granted to any citizen of Sri Lanka in respect of any invention approved by the Commission then, subject to the provisions hereinafter 4 contained, the income received by the holder of such patent from royalties or otherwise in respect of such patent shall not be liable to any income tax, wealth tax or other tax payable under the Inland Revenue Act, No. 28 of 1979, for a period of five years from the date of the grant of the patent, and the holder of such patent shall be exempt from all licences or permits required to be obtained under any written law. |
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| (2) The preceding provisions of this section shall apply only to the holders of a patent-
| | (a) where the paid-up capital consequent to the use of such patented invention does not exceed one million rupees ; and | | |
| | (b) where the manufacture in pursuance of such patented invention is carried out by the inventor himself as a home industry. | | |
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Sri Lanka Consolidated Acts