HK$ 450 (standard patents: 4th to 10th year of the 20-year term)
HK$ 620 (standard patents: 11th to 15th year of the 20-year term)
HK$ 850 (standard patents: 16th to 20th year of the 20-year term)
HK$ 1,080 (short-term patents)
Due date for renewal: The due date in terms of month and day is generally the filing date of standard patent (O)/short-term patent or deemed filing date of standard patent (R), e.g. if the deemed filing date of standard patent (R) is 1 May, then the due date is generally 1 May. Where the filing date or deemed filing date is 29 February, the due date is generally 29 February for leap year or 28 February for non-leap year.