This manual sets out how renewal fees (annuities) for Hong Kong (HK) patents are handled in practice. It covers, in order, the anchor date and deadline calculation, the year from which payment starts, the grace period and surcharge, restoration after lapse, official fees, and a management checklist. In Hong Kong the anchor date is sometimes taken from a document filed somewhere other than Hong Kong, so date management in the docket is particularly important.
1. Summary at a Glance
- System type
- Annual renewal (years 4 to 20)
- Anchor date
- Filing date of the designated patent application (CN/EP/GB) For the O route, the HK filing date
- Deadline method
- Anniversary method — deadline for year n = the (n−1)th anniversary
- Payment window
- Opens 3 months before the deadline (Form P10)
- Payment start
- Only those of years 4 to 20 falling due after grant (no retroactive payment)
- Term
- Designated filing date + 20 years
- Grace period
- 6 months + flat HK$270 Payment within grace is treated as "never expired"
- Restoration
- 18 months after lapse (Form P12, HK$405) — at the Registrar's discretion
- Reductions
- None
- Official fee summary
- Years 4–10: HK$450 each; years 11–15: 620; years 16–20: 850
| Item | Value |
|---|---|
| System | Annual renewal (years 4 to 20) |
| Anchor date | Filing date of the designated patent application (HK filing date for the O route) |
| Deadline calculation | The (n−1)th anniversary |
| Advance payment opens | 3 months before the deadline |
| Grace | 6 months + flat HK$270 |
| Restoration | 18 months after lapse (Form P12, HK$405), at the Registrar's discretion |
| Reductions | None |
2. Anchor Date and Deadline Calculation
For a Hong Kong standard patent (R route, re-registration), the anchor date is not the date of the document filed in Hong Kong but the filing date of the designated patent application (CN/EP(UK)/GB). For a standard patent under the O route and for short-term patents, the Hong Kong filing date is the anchor date. In other words, for R route cases the "designated filing date" must be filled in on the case master, otherwise deadlines cannot be calculated.
Deadlines follow the anniversary method. The deadline for year n is the (n−1)th anniversary of the anchor date. No end-of-month adjustment is applied. The payment window opens 3 months before the deadline, and payment is made using Form P10.
Below is a calculation example for a case with a filing date of 2020-06-15 and a grant date of 2023-03-10.
| Year | Deadline |
|---|---|
| Year 4 | 2023-06-15 |
| Year 5 | 2024-06-15 |
| Year 6 | 2025-06-15 |
| Year 7 | 2026-06-15 |
| Year 8 | 2027-06-15 |
| Year 9 | 2028-06-15 |
| Year 10 | 2029-06-15 |
| Year 11 | 2030-06-15 |
This case generates a total of 17 payment events up to year 20. The term runs for the designated filing date + 20 years.
3. Start of Payment
- Renewal fees are due for years 4 through 20.
- No renewal fee obligation arises while the application is still pending before grant.
- Even if grant is delayed, there is no retroactive lump-sum payment. Payment starts from the first anniversary falling due after grant.
- In the example case above, grant occurred on 2023-03-10, so payment becomes due from 2023-06-15 (year 4), the first anniversary after grant.
4. Grace Period and Surcharge
Even if the deadline is missed, there is a grace period of 6 months. The surcharge is a flat HK$270 and does not increase with the number of months elapsed.
| Period | Payment structure |
|---|---|
| Normal payment window (3 months before the deadline to the deadline) | Renewal fee for the year concerned |
| Grace period (6 months after the deadline) | Renewal fee for the year concerned + flat HK$270 |
In Hong Kong, if payment is made within the grace period the patent is treated as having "never expired", that is, as never having lapsed. Payment within grace has the same effect as normal payment. Even so, relying on the grace period as normal practice is not recommended, because a surcharge is incurred and, once grace expires, the matter moves into the realm of discretionary decision.
5. Lapse and Restoration
If no payment is made even after the 6-month grace period, the patent lapses. Hong Kong provides a restoration procedure after lapse.
| Item | Details |
|---|---|
| Restoration request period | 18 months after lapse |
| Form and fee | Form P12, HK$405 |
| Decision | At the Registrar's discretion |
6. Reductions
There is no fee reduction system for Hong Kong patent renewal fees. There is no difference in rates depending on whether the applicant is an individual or a legal entity, or on the size of the business, so there is nothing to manage in terms of assessing reduction eligibility or the risk of incorrect claims. Quotes and invoices can always be calculated on a full-fee basis.
7. Advance and Lump-Sum Payment
- The payment window opens 3 months before the deadline. Advance payment earlier than that is not provided for.
- Payment is made using Form P10.
- Fees are payable on a per-year basis; no separate arrangement for paying several years in advance in one go is set out in the system.
- In practice, it works well to treat the opening of the window 3 months before the deadline as the trigger for starting work and to handle the payment within that window.
8. Official Fees
The confirmed Hong Kong patent renewal fees are set out below. The currency is HKD.
| Period | Annual fee (HK$) |
|---|---|
| Years 4–10 | 450 each |
| Years 11–15 | 620 each |
| Years 16–20 | 850 each |
| Ancillary cost | Amount (HK$) | Remarks |
|---|---|---|
| Grace period surcharge | 270 | Flat rate, for payment within the 6-month grace period |
| Restoration request (Form P12) | 405 | Within 18 months after lapse, at the Registrar's discretion |
| Maintenance fee for R route pending application | 270 per year | From the 5th anniversary |
| Surcharge on maintenance fee for R route pending application | 95 | — |
| Short-term patent renewal (one time, 4th anniversary) | 1,080 | Covering years 5–8 |
9. Management Checklist
What to check first in the docket
- Route classification — check that the case is marked as R (re-registration), O (direct Hong Kong filing) or short-term patent. The anchor date differs depending on the route.
- Anchor date — for the R route, the filing date of the designated patent application (CN/EP(UK)/GB); for the O route, the Hong Kong filing date. If this date is blank, the deadlines from year 4 through year 20 will either not be generated at all or will be wrong. It is the first field to fill in when taking on a new case.
- Grant date — the basis for determining the first anniversary after grant. Since there is no retroactive lump-sum payment, anniversaries falling before grant are excluded from payment.
- Term expiry date — designated filing date + 20 years. Clean up so that no reminders remain beyond the last payable year.
- Whether the application is still pending — an R route pending application is managed separately on the maintenance fee track (HK$270 per year from the 5th anniversary) rather than the renewal fee track.
Payment cycle sequence
- 3 months before the deadline — the payment window opens. Treat this point as the start date for work.
- Confirm whether to maintain the right — check with the client whether they wish to maintain the patent for the year concerned.
- Fix the amount — check the fee for the applicable band of years (4–10 / 11–15 / 16–20) against the current fee schedule. As there are no reductions, the full fee applies.
- File Form P10 and pay — complete this before the deadline (= the (n−1)th anniversary).
- Confirm payment — record the acceptance result on the case and check the deadline for the next year.
When the deadline has been missed
- Immediately after the deadline to 6 months — this is the grace period. If the renewal fee + HK$270 is paid, the patent is treated as not having lapsed. Close the matter out here without fail.
- Expiry of grace — the patent lapses. Manage this point as a hard deadline.
- Within 18 months after lapse — a restoration request on Form P12 (HK$405) is possible, but it is at the Registrar's discretion. Do not build a schedule on the assumption that it will be granted.
For Hong Kong cases the deadline calculation itself is simple, but because the anchor date for the R route comes from a document originating outside Hong Kong, this is a type of case where missing data easily leads to incidents. In iphere's overseas annuity and renewal management, we recommend recording the route classification and anchor date at the case level, and running separate reminders for the opening of the payment window 3 months before the deadline and for the grace period expiry date.
Sources, cut-off date and disclaimer
This manual is based on iphere's August 2026 survey of country-by-country overseas maintenance rules, together with values produced by the deadline engine that runs on those same rules. Official fees and deadline rules change by office notice, so please confirm against the official source and your local agent before any actual payment or filing.