There is a prescribed period for the payment of a renewal fee1 in respect of the first renewal date2 of a patent. The first renewal date is the fourth anniversary of the date of filing3, and the renewal period is also prescribed4.
Where a patent is granted5 during the period of three months ending with the fourth anniversary of the date of filing, or at any time after that anniversary: (1) the first renewal date is the last day of the period of three months beginning immediately after the date on which the patent was
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