Annuity or renewal fees are required to maintain the granted patent in force. Where a patentee, at the expiration of the third year from the date of filing of the patent, intends to keep the same in force he shall pay the prescribed annual fee.
Annuity or renewal fees are required to maintain the granted patent in force. Where a patentee, at the expiration of the third year from the date of filing of the patent, intends to keep the same in force he shall pay the prescribed annual fee.