Patent Act Article 93
Time period for payment of annuityThe annuity for an invention patent shall be paid starting from the publication date. Payment of the first-year annuity shall be made pursuant to the provision set forth in Paragraph 1, Article 52 hereof, while the payment of the second-year annuity and the annuities thereafter shall be made before the period thereof expires.The annuity for several years may be paid at one time. Under such circumstance, if the annuity rate is adjusted upward, the patentee concerned will not be required to pay the deficit.
中文原文 專利法第93條
發明專利年費自公告之日起算，第一年年費，應依第五十二條第一項規定繳納；第二年以後年費，應於屆期前繳納之。
前項專利年費，得一次繳納數年；遇有年費調整時，毋庸補繳其差額。
前項專利年費，得一次繳納數年；遇有年費調整時，毋庸補繳其差額。