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You pay patent renewals in Thailand to the DIP, in THB, up to year 20. You pay nothing until the office grants your patent. Miss a due date and you get a 180-day grace period, with a surcharge set by your fee tier.
Thailand counts annuities from the filing date, and the amount depends on which patent year you are entering. You pay nothing while the application is still pending.
The first renewal falls due 59 days after the grant date, payable to the DIP.
For example, if the grant date is 2022-01-20, then the first renewal must be paid by 2022-03-20.
Every later annuity falls due on the anniversary of the filing date, each year, until year 20.
For example, if the filing date was on November 9, then all subsequent annuities will be due on November 9 each year.
Official fees payable to the DIP, by patent year, in THB.
| Year | Official fee (THB) | ≈ USD | Cumulative (THB) |
|---|---|---|---|
| 1 | — | — | — |
| 2 | — | — | — |
| 3 | — | — | — |
| 4 | — | — | — |
| 5 | 1,000 | $31 | 1,000 |
| 6 | 1,200 | $37 | 2,200 |
| 7 | 1,600 | $49 | 3,800 |
| 8 | 2,200 | $67 | 6,000 |
| 9 | 3,000 | $92 | 9,000 |
| 10 | 4,000 | $122 | 13,000 |
| 11 | 5,200 | $159 | 18,200 |
| 12 | 6,600 | $202 | 24,800 |
| 13 | 8,200 | $251 | 33,000 |
| 14 | 10,000 | $306 | 43,000 |
| 15 | 12,000 | $367 | 55,000 |
| 16 | 14,200 | $434 | 69,200 |
| 17 | 16,600 | $508 | 85,800 |
| 18 | 19,200 | $587 | 105,000 |
| 19 | 22,000 | $673 | 127,000 |
| 20 | 25,000 | $765 | 152,000 |
| Full term · years 5–20 | 152,000 | $4,649 | 152,000 |
The official fees are fixed. What your provider adds on top is not. Send your email and we'll show you what these renewals should really cost.
A 180-day grace period runs from the day after the due date. You can still pay the renewal fee with a surcharge set by your fee tier, and the patent continues without interruption. Once the grace period closes, the patent lapses.
If you miss a renewal due date of 15 March 2026, the patent enters the grace period on 16 March 2026. Settle the renewal fee and the surcharge by 11 September 2026 to keep the patent in force.
The same schedule, deadlines and grace rules, in the jurisdictions we are asked about most.
Patents, trademarks and designs in other countries and regions.
Patents aren't the only rights that lapse without renewal. Thailand also protects trademarks and designs. Each on its own schedule and fee scale.
Renewal terms and official fees for registered industrial designs in Thailand.
Nothing. You pay no annuities in Thailand while your application is pending. Payments start once the office grants your patent.
Whenever you like. In Thailand, you can settle renewal fees at any time and pay several annuities together in one go.
Yes. You get a 180-day grace period, starting the day after you miss the due date. Pay the renewal fee plus a surcharge inside that window and your patent stays in force. Your fee tier sets the amount. Miss the window too and the patent lapses.
Up to 20 years from the filing date, as long as you pay every annuity on time. Stop paying and it lapses at the end of the grace period that follows the last due date.
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