80.
| (1) Subject and without prejudice to other provisions of this Part a patent shall expire fifteen years after the 'date of its grant. |
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| (2) Where a patentee intends at the expiration of the second year from the date of grant of the patent to keep the same in force he shall twelve months before the date of expiration of the second and each succeeding year during the term of the patent, pay the prescribed annual fee : |
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Sri Lanka Consolidated Acts