TRW & Co · Intellectual property
How to Register a Patent in Singapore: Process, Cost and Timeline
Patent registration in Singapore involves filing with IPOS, requesting search and examination, answering any written opinion and paying a grant fee. Core official fees for a simple domestic filing start at about S$2,430, and you can defer examination for 36 months or accelerate it through SG Patents Fast, which reopened on 1 September 2026.
Key pointYour choice of route matters more than any single fee: a combined search and examination request costs less in official fees than separate search and examination, and pairing a PCT filing with PPH or SG Patents Fast can turn a multi-year process into a matter of months.
At a glance
Run by IPOS
Applications are filed online with the Intellectual Property Office of Singapore under the Patents Act 1994, through the domestic route or PCT national phase entry.
Core official fees
Filing S$170, combined search and examination S$2,050 plus S$80 per claim over 15, and grant S$210 on IPOS's current schedule.
Examination deadline
Examination must be requested within 36 months of the priority or filing date; a fee-free pilot allows an 18-month extension for deadlines to 31 August 2027.
SG Patents Fast
Resumed from 1 September 2026, it targets a first office action within four or eight months for applications with 20 claims or fewer.
Term and renewals
A patent lasts up to 20 years from filing, with annual renewal fees payable from the fifth year that rise over the life of the patent.
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The short answer: steps, cost and timeline
Patent registration in Singapore is a filing, search and examination process run by the Intellectual Property Office of Singapore (IPOS) under the Patents Act 1994. You file an application with a description, claims and abstract, request a search and examination (together or separately), respond to any written opinion, and then request grant. A granted patent lasts up to 20 years from the filing date, subject to annual renewal fees from the fifth year.
On IPOS's current fee schedule, the core official fees for a straightforward domestic application with 15 claims or fewer start at a little under S$2,500 if you use the combined search and examination route. Professional drafting and prosecution fees are usually the larger cost. Timing depends heavily on the route you choose: you can defer examination for up to 36 months from the priority or filing date, or accelerate it so that a first office action issues within months.
As of October 2026, two recent IPOS changes matter. The SG Patents Fast acceleration programme resumed accepting new requests from 1 September 2026, and a fee-free pilot allowing an 18-month extension of the examination deadline has been extended to cover deadlines up to 31 August 2027. This article walks through the process, the costs and the timing choices in order.
Before filing: is the invention patentable and who owns it?
An invention is patentable in Singapore if it is new, involves an inventive step and is capable of industrial application. IPOS lists certain exclusions, including methods of surgical, therapeutic or diagnostic treatment practised on the human or animal body, and inventions whose publication or exploitation would be expected to encourage offensive, immoral or anti-social behaviour.
Novelty is the main trap in patent registration in Singapore. Any public disclosure before the filing date, including a conference talk, a pitch deck sent without confidentiality or a product demonstration, can destroy it. Use non-disclosure agreements for any third-party discussions and treat the filing date as the point after which disclosure is safer.
Ownership should be settled before patent registration in Singapore begins. Under Singapore law the right to the patent may belong to the employer for inventions made in the normal course of an employee's duties, to a person with a prior agreement with the inventor, or to the inventor. Founders, universities and joint venture partners often disagree about this later, so align assignment terms early. Our guide to research and development patent strategy covers how to build that into R&D agreements.
The patent registration in Singapore process, step by step
The domestic route is the most common starting point. The steps below follow IPOS's description of the domestic route.
- Prepare and file. File the request for grant with a description, any drawings, an abstract and, ideally, claims. If claims are not ready, you can file to secure a date but must furnish claims within 12 months of the priority or filing date, whichever is earlier. Filing is online through IPOS Digital Hub, and the filing fee is payable within one month.
- Formalities and preliminary examination. IPOS checks filing requirements and formalities. If something is missing, you will be given a short period, generally two months, to fix it, failing which the application may be treated as abandoned or refused.
- Publication. The application is published as soon as possible after 18 months from the priority date or, if there is none, the filing date. Early publication can be requested, and the application can be withdrawn before publication if you change strategy.
- Search and examination. Choose one of three options: a search within 13 months followed by examination within 36 months; a combined search and examination within 36 months; or examination alone within 36 months where suitable search results are available, such as from a corresponding application.
- Respond to the written opinion. If the examiner raises objections, you have five months to respond to a written opinion, or two months for an invitation to amend. If issues remain unresolved 18 months after the first written opinion, IPOS issues a notice of intention to refuse.
- Grant. Once the application is found eligible, request the certificate of grant within two months of the notice of eligibility to proceed to grant, or the application will be treated as abandoned.
- Renew. Pay renewal fees each year from the fifth year after filing to keep the patent in force for up to 20 years.
Filing abroad first? Clear national security
If you are resident in Singapore, including as a permanent resident or work pass holder, and want to file a first application overseas, you must obtain written national security clearance from IPOS before doing so. IPOS states that it responds within three to five working days. Missing this step is an offence that the Registrar may compound, so build it into any plan to file first in the United States, Europe or China.
Choosing a route: domestic, PCT or acceleration
Patent registration in Singapore can start with a direct national filing, or enter Singapore later from an international application under the Patent Cooperation Treaty (PCT). Within either, you can accelerate or defer examination. The table summarises the main choices.
| Route or option | How it works | Best suited to | Watch-outs |
|---|---|---|---|
| Domestic route | File directly with IPOS and choose a search and examination option | Singapore-first inventions and businesses focused on Singapore and ASEAN | Deadlines run from the priority or filing date; claims must be filed within 12 months |
| PCT national phase | File one international application, then enter Singapore in the national phase | Inventions with a global filing plan that need time to decide on countries | National phase entry fees and deadlines apply; IPOS-prepared international reports may reduce search and examination fees |
| Patent Prosecution Highway (PPH) | Use a positive result from a partner office to request accelerated examination in Singapore | Applications already allowed in another major office | Claims must correspond sufficiently to the allowed claims |
| SG Patents Fast 4 or Fast 8 | Pay an acceleration fee with the examination request for a first office action within four or eight months | Commercially urgent inventions, investor or licensing deadlines | Limited to 20 claims or fewer, not divisional applications, with a monthly cap per entity |
| Deferred examination with extension | Use the full 36-month window and, under the current pilot, extend by up to 18 months without official fees | Applicants waiting for results from other offices, or managing cash flow | The pilot applies only to examination deadlines falling between 1 September 2024 and 31 August 2027 |
IPOS states that it accepts work products from more than 30 PPH and Global PPH partners, including major offices such as those of China, Japan, Korea, the United States and Europe. For many foreign applicants, combining a PCT filing with a PPH request in Singapore is the most cost-effective path. Details of SG Patents Fast are in Patents Circular No. 5 of 2026, and the extended examination deadline pilot is in Patents Circular No. 4 of 2026.
How much does patent registration in Singapore cost?
The official fees below are taken from IPOS's forms and fees page, which notes that most fee updates took effect on 1 September 2025 and others on 1 April 2026. Always check the schedule that applies to your filing date.
| Item | Form | Official fee |
|---|---|---|
| Filing (request for grant) | PF1 | S$170 |
| Request for search report | PF10 | S$1,735 |
| Search and examination where IPOS prepared the international report (PCT national phase) | PF11(a) | S$1,750 plus S$80 per claim over 15 |
| Search and examination (any other case) | PF11(b) | S$2,050 plus S$80 per claim over 15 |
| Examination | PF12 | S$1,420 plus S$80 per claim over 15 |
| Supplementary examination | PF12A | No fee |
| Grant (for PF11, PF12 or PF12A filed on or after 1 September 2025) | PF14 | S$210 |
| SG Patents Fast acceleration with PF11 | Additional | S$1,800 (Fast 4) or S$900 (Fast 8) |
| SG Patents Fast acceleration with PF12 | Additional | S$1,200 (Fast 4) or S$600 (Fast 8) |
Worked examples of official fees
For a domestic application with 15 claims or fewer using the combined search and examination route, the core official fees are the filing fee, the PF11(b) fee and the grant fee: S$170 plus S$2,050 plus S$210, or S$2,430. Using a separate search and then examination costs more: S$170 plus S$1,735 plus S$1,420 plus S$210, or S$3,535. Adding SG Patents Fast 4 to the combined route adds S$1,800.
For patent registration in Singapore, excess claims are charged at S$80 each above the threshold, and further excess claim fees can arise when you amend in response to a written opinion. Careful claim drafting therefore saves money as well as improving quality.
Renewal fees over the life of the patent
Renewal fees rise over time. On IPOS's current schedule they are S$176 a year for years five to seven, S$460 for years eight to ten, S$640 for years 11 to 13, S$830 for years 14 to 16, S$1,010 for years 17 to 19 and S$1,200 for year 20. Added together, keeping a patent in force to its full term costs a little over S$10,500 in renewal fees alone. Late payment surcharges apply if you miss the due date, so put renewals in a reliable docketing system.
Official fees are only part of the budget. Drafting a strong specification and claims, and responding to examination reports, usually costs more than the IPOS fees. Spending more at drafting stage to get the claims right typically saves money later, because it reduces excess claim fees, shortens prosecution and produces a patent that is easier to license or enforce.
How long does patent registration in Singapore take?
There is no single answer, because applicants control much of the timetable. The statutory framework sets the outer limits: claims within 12 months, publication after 18 months, examination requested within 36 months of the priority or filing date, and up to 18 months from the first written opinion to resolve objections. Under the current pilot, the 36-month examination deadline can be extended by up to 18 months without official fees.
At the other end, SG Patents Fast 4 aims for a first office action within four months of a successful acceleration request, and PPH requests can also shorten prosecution. A clean application with an accelerated examination and no serious objections can therefore move to grant far faster than one using every available deferral. The right pace depends on commercial need: investors and licensees often want an early grant, whereas applicants who are still developing the product may prefer to defer and keep options open.
An illustrative scenario
This scenario is illustrative only and does not describe any real client.
A Singapore medical technology start-up has developed a new sensor design. Its founders are Singapore permanent residents. They plan to raise a Series A in nine months and expect investors to ask about patent protection in Singapore, the United States and China.
They file first in Singapore through the domestic route, with full claims, to secure a priority date without needing national security clearance for an overseas first filing. Within 12 months they file a PCT application claiming that priority. Because the Series A is approaching, they also request combined search and examination in Singapore with SG Patents Fast 8, keeping within 20 claims. A positive written opinion arrives in time for investor diligence, and the PCT application preserves their options for other markets. The founders' IP assignment agreements are signed before filing so that the company, not the individuals, is the applicant.
Risks and common mistakes
Disclosing before filing
Pitch decks, academic posters and trade show demonstrations are the most common sources of novelty-destroying disclosures. Once the invention is public, a later patent application may fail. Singapore law has limited grace period provisions, but relying on them is risky and they may not be recognised in other countries.
File first, or disclose only under a written confidentiality agreement.
Filing abroad without clearance
Singapore residents who file a first application overseas without IPOS's written authorisation commit an offence. This catches founders who use a United States provisional application as their first filing without checking Singapore rules, and foreign employees living in Singapore who are named as inventors.
Either file first in Singapore or obtain clearance before the foreign filing; IPOS states it responds within three to five working days.
Missing the 36-month examination deadline
The examination deadline runs from the priority or filing date and is easy to overlook in a multi-country portfolio. The current pilot allows a fee-free extension of up to 18 months, but only for deadlines falling between 1 September 2024 and 31 August 2027, and the request must be filed within the permitted period.
Docket every Singapore deadline and review the portfolio at least annually.
Unclear ownership and inventorship
Disputes about who owns an invention, or who should be named as inventor, can lead to revocation proceedings or derail investment. Inventorship is a personal status that cannot be assigned, while ownership can. Employee, consultant and university arrangements should address both.
Our trade secrets and technology transfer teams help align these documents.
Cross-border strategy and next steps
Protection is territorial, so a Singapore patent protects only Singapore. Most businesses use Singapore as part of a wider filing plan built around the 12-month Paris Convention priority period and the PCT. The right mix of countries depends on where you manufacture, sell, license and expect competitors.
TRW & Co coordinates patent registration in Singapore with filings and enforcement planning in Bangladesh, the UK, the UAE, China and Europe through our network. Once granted, patents create value through licensing and enforcement; see our pages on patent registration, patent commercialisation, IP licensing and IP litigation, and our article on healthcare research IP for collaborative research.
Before you file, work through this short checklist:
- Confirm the invention has not been publicly disclosed, and stop any planned disclosure until filing.
- Confirm ownership and sign assignments from founders, employees and contractors.
- Decide the first filing country and, if not Singapore, obtain national security clearance if any applicant or inventor is resident here.
- Choose the search and examination option and whether to accelerate or defer.
- Budget for official fees, professional fees and renewals over the expected life of the patent.
- Docket every deadline: claims, search, examination, responses, grant and renewals.
To discuss a filing strategy, contact TRW & Co. Where Singapore court or tribunal representation is required, we work alongside Singapore-qualified counsel, and we coordinate filings with registered patent agents where required.
Frequently asked questions
01How much does it cost to register a patent in Singapore?
On IPOS's current schedule, the core official fees for a domestic application with 15 claims or fewer using combined search and examination are S$170 for filing, S$2,050 for search and examination and S$210 for grant, totalling S$2,430. Separate search and examination costs more. Each claim over 15 adds S$80, and acceleration adds further fees. Professional drafting and prosecution fees are additional and usually exceed the official fees, and renewal fees are payable annually from the fifth year.
02How long does patent registration in Singapore take?
It depends on the route. Applicants can request examination as late as 36 months from the priority or filing date, and the current IPOS pilot allows a fee-free extension of up to 18 months for deadlines falling by 31 August 2027. Alternatively, SG Patents Fast 4 targets a first office action within four months of a successful request, and Patent Prosecution Highway requests can also speed things up. Objections from the examiner add time, so drafting quality matters.
03Do I need a patent agent to file in Singapore?
IPOS states that appointing a patent agent is optional, and applicants can file themselves through IPOS Digital Hub. In practice, drafting claims and responding to written opinions are technical tasks with long-term consequences for the scope and enforceability of the patent, so most businesses use a registered patent agent for prosecution, with lawyers advising on ownership, commercial strategy and enforcement.
04Can I file a patent abroad before filing in Singapore?
If you are resident in Singapore, including as a permanent resident or work pass holder, you must obtain written national security clearance from IPOS before filing a first application overseas. IPOS states that it responds to clearance requests within three to five working days. Filing abroad without clearance is an offence that the Registrar may compound. Many applicants simply file first in Singapore and then claim priority abroad within 12 months.
05What is SG Patents Fast?
SG Patents Fast is an IPOS acceleration programme. Applicants pay an additional fee with their examination request to receive a first office action within four months (Fast 4) or eight months (Fast 8). It resumed accepting new requests from 1 September 2026. Eligible applications must have 20 claims or fewer and must not be Singapore divisional applications, and each entity is limited to five requests a month. Successful applications can also accelerate later office actions.
06How long does a Singapore patent last?
A Singapore patent lasts up to 20 years from the filing date, provided annual renewal fees are paid from the fifth year. On IPOS's current schedule renewal fees rise from S$176 a year in the early years to S$1,200 for the twentieth year, totalling a little over S$10,500 across the full term. Late payment surcharges apply if a renewal is missed, and a patent that lapses may be difficult to restore.
Sources and official materials
- IPOS: How to register patents — Registrability, routes, acceleration and fees overview
- IPOS: Domestic route — Step-by-step deadlines for Singapore filings
- IPOS: Patent forms and fees — Current official fee schedule and effective dates
- IPOS: National security clearance — Rules for residents filing first overseas
- IPOS Patents Circular No. 5 of 2026 — Resumption of SG Patents Fast from 1 September 2026
- IPOS Patents Circular No. 4 of 2026 — Extension of the examination deadline pilot
- Patents Act 1994 — Primary legislation for Singapore patents
General information only, current as at 20 October 2026. It is not legal advice and does not create a lawyer–client relationship. Singapore law and regulatory practice change; check current official sources and take advice on the facts of your matter.
