PCT National Phase in Turkey: The 30-Month Deadline Explained
Author: Burak Ünal · · 10 min read
Key takeaways
- The PCT national phase in Turkey must be entered within 30 months of the earliest priority date, whether or not a Chapter II demand was filed.
- Entry requires a Turkish translation of the international application and payment of the national fees to TÜRKPATENT.
- Foreign applicants must act through a registered Turkish patent attorney under a power of attorney.
- Missing the 30-month deadline usually ends the chance of a Turkish patent, with reinstatement available only in limited circumstances.
If you filed an international patent application and want protection in Türkiye, you must complete the PCT national phase in Turkey within 30 months of your priority date. Miss that window and your patent rights in the country normally lapse, with only limited routes to recover them. This guide explains the 30-month deadline, how the priority date sets your clock, what TÜRKPATENT requires, and the practical steps foreign applicants take to secure a Turkish patent through the Patent Cooperation Treaty.
What Is PCT National Phase Entry in Turkey?
PCT national phase entry in Turkey is the step where an international patent application filed under the Patent Cooperation Treaty becomes a national application examined by TÜRKPATENT. A PCT filing does not grant a patent by itself. It reserves your right to seek protection across the treaty's member states and buys you time to decide where to proceed, but a patent is always granted country by country. To obtain a Turkish patent, you move your international application into the national phase before the Turkish Patent and Trademark Office (TÜRKPATENT).
The Patent Cooperation Treaty is administered by the World Intellectual Property Organization and has well over 150 contracting states, Türkiye among them. If you want to understand the international stage that comes before this step, our guide to the PCT international patent application explains how one filing keeps your options open worldwide. The national phase is where that global option is finally cashed in for a specific country.
When Is the Deadline? The 30-Month Rule Explained
The deadline to enter the PCT national phase in Turkey is 30 months from the earliest priority date, as of the time this article is written. This is one of the more generous windows the treaty offers, and it applies whether or not you filed a demand for international preliminary examination (Chapter II). In some countries the time limit changes depending on that choice. For Türkiye the PCT national phase entry deadline in Turkey is the same 30 months either way, which removes one common source of confusion.
Thirty months can feel distant when your international application is first published, so it is easy to let it slip. In our practice before TÜRKPATENT, the applicants who protect their rights best are the ones who diarise the date the moment the PCT application is filed and start the Turkish translation well before the final weeks. The deadline is calculated to the day, and TÜRKPATENT treats it strictly.
How the Priority Date Sets Your Clock
Your 30-month clock runs from the priority date, not from the date you filed the PCT application. The priority date is usually the filing date of your first application for the same invention, often a national filing made up to twelve months before the international filing. Under the Paris Convention, that first filing gives you a priority right you can claim in later applications. Our explanation of Paris Convention priority in Turkey sets out how the twelve-month right works, and the same principle fixes the start of your PCT timeline.
A short example makes it concrete. Suppose you filed a first national application on 1 March 2024, then filed a PCT application on 1 February 2025 claiming that priority. Your 30-month deadline for entering the national phase in Turkey runs from 1 March 2024, giving you until around 1 September 2026. If your PCT application claims no priority at all, the 30 months run from the international filing date instead. When several priorities are claimed, the clock runs from the earliest one.
TÜRKPATENT Patent National Phase Requirements
To enter the national phase, you must give TÜRKPATENT a Turkish translation of your international application and pay the national fees within the deadline. The core TÜRKPATENT patent national phase requirements are straightforward in principle, though the detail matters:
- A Turkish translation of the international application, including the description, claims, any text in the drawings and the abstract.
- Payment of the applicable national (and, where relevant, examination) fees to TÜRKPATENT.
- The application reference details from the international phase, so the file can be matched to its PCT record.
- For applicants without a residence or principal place of business in Türkiye, a registered Turkish patent attorney must act as the representative, supported by a power of attorney.
The quality of the Turkish translation is not a formality. The translated claims define the scope of what you can enforce later, so a careless rendering can narrow your protection or create ambiguity. Where the international search raised objections, the entry point is also the moment to consider amendments so the Turkish file starts on the strongest footing possible.
What Drives the Cost
We do not quote fixed figures here, because the total depends on your case and because official TÜRKPATENT fees are revised every year and published on the office's own site. The main cost drivers are the length and technical density of the specification (which sets the translation effort), the number of claims, the official filing and examination fees, and any amendments or responses needed during examination. Leo Patent provides a written, itemised quote before any work starts, so you see each element before committing.
National Phase in Turkey or the European Patent Route?
You can reach Turkish patent protection through TÜRKPATENT directly or through a European patent that is later validated in Türkiye. Türkiye is both a PCT contracting state and a member of the European Patent Convention, so a PCT application can enter the regional phase at the European Patent Office (EPO) and, once a European patent is granted, be validated for Türkiye. Which route fits depends on how many European countries you want and your budget for the process.
| Point | Direct national phase at TÜRKPATENT | European patent validated in Türkiye |
|---|---|---|
| Office examining | TÜRKPATENT | EPO, then validation in Türkiye |
| Best when | Türkiye is your main or only European market | You want several European countries at once |
| Language of the file | Turkish translation filed at entry | EPO languages, then Turkish translation at validation |
| Deadline from priority | 30 months to enter the national phase | 31 months to enter the European regional phase |
Both routes lead to an enforceable Turkish patent. The direct national phase is often the simpler and more economical choice when Türkiye is the country that really matters to you, while the European route can make sense when Türkiye is one of many European markets on your list.
What Happens After You Enter the National Phase
Once you have entered the national phase, TÜRKPATENT treats the file as a Turkish patent application and takes it through examination toward grant or refusal. The office examines the invention against the patentability requirements of the Industrial Property Code No. 6769, drawing on the international search report and any preliminary examination report from the PCT stage. You may receive objections to answer, and you can amend the claims within the limits the law allows.
If the application meets the requirements, TÜRKPATENT grants the patent and publishes the grant. A Turkish patent lasts twenty years from the international filing date, provided the annual maintenance fees are paid on time. Those annual fees keep the patent in force; let one lapse without using the available grace mechanisms and the patent can fall away. The full text of the governing law is available in the Industrial Property Code No. 6769, and the office itself publishes current procedures and fee schedules at TÜRKPATENT.
What If You Miss the 30-Month Deadline?
Missing the 30-month deadline usually ends your chance to get a patent in Türkiye through that PCT application, but not always. The Industrial Property Code No. 6769 provides for reinstatement of rights in limited circumstances, where an applicant missed a deadline despite taking the care required in the situation. A request has to be made within set time limits and supported by reasons and a fee, and reinstatement is never automatic. It is a narrow safety net, not a routine extension.
Because the standard is strict and the facts of each case matter, do not treat a missed deadline as a lost cause without checking, and do not treat reinstatement as a backup plan you can rely on. If you think your window has closed or is about to, the sensible step is to have a registered patent attorney review the exact dates and the available options quickly, while any remaining time can still be used.
Frequently Asked Questions
How long do you have to enter the national phase in Turkey?
You have 30 months from your earliest priority date to enter the PCT national phase in Turkey, as of the time this article is written. The limit is the same whether or not you filed a Chapter II demand, and TÜRKPATENT applies it strictly to the day.
Does entering the national phase grant a Turkish patent?
No. Entering the national phase in Turkey at TÜRKPATENT turns your international application into a Turkish application, after which the office examines it. A patent is granted only if the invention meets the requirements of the Industrial Property Code No. 6769.
Do I need a Turkish translation of my PCT application?
Yes. A Turkish translation of the international application, covering the description, claims, drawing text and abstract, is required to enter the national phase. The translated claims define the scope you can later enforce, so accuracy is important.
Do foreign applicants need a patent attorney in Turkey?
Yes. Applicants without a residence or principal place of business in Türkiye must act through a registered Turkish patent attorney, supported by a power of attorney. The attorney files the national phase entry, handles the fees and manages examination.
How much does it cost to enter the national phase in Turkey?
The cost depends on your case, so no fixed figure applies. The main drivers are the translation effort, the number of claims, the official TÜRKPATENT fees (revised each year) and any amendments during examination. We provide a written, itemised quote before starting.
Can I still enter the national phase after 30 months?
Sometimes, but only in limited circumstances. The Industrial Property Code No. 6769 allows reinstatement of rights where a deadline was missed despite due care, within set time limits and for a fee. It is a narrow remedy, not a routine extension, so act quickly if the deadline has passed.
How long does a Turkish patent last?
A Turkish patent lasts twenty years from the international filing date, as of the time this article is written, provided the annual maintenance fees are paid on time. A missed annual fee can cause the patent to lapse if the grace mechanisms are not used.
About Leo Patent
Leo Patent is the trade mark under which GORDION PARTNERS ORGANİZASYON DANIŞMANLIK LTD. ŞTİ. (Istanbul Trade Registry no. 308755-5) provides trademark and patent attorney services (marka ve patent vekili) to foreign and Turkish clients. Its registered industrial property attorneys act before the Turkish Patent and Trademark Office (TÜRKPATENT) and coordinate trademark, patent and design filings abroad with authorised local partners.
This article was prepared under the supervision of Burak Ünal, general manager of Leo Patent, registered patent attorney (TÜRKPATENT reg. no. 1677) and registered trademark attorney (TÜRKPATENT reg. no. 2900). He holds a Business Management degree from Boğaziçi University (2016) and an MSc in Finance from the London School of Economics, which he attended as a Chevening Scholar; he is also a congress member of Galatasaray Sports Club. He advises clients in Turkish, English, French and Chinese. Leo Patent's other registered attorney is Kaan Karanfiloğlu, trademark attorney (TÜRKPATENT reg. no. 2909). Leo Patent is not a law firm and does not provide lawyer services, court representation or litigation.
Need help with a trademark or patent in Türkiye? Contact Leo Patent for a consultation: www.leopatent.com · contact@leopatent.com · phone and WhatsApp +90 532 603 88 40.
Disclaimer: Leo Patent is a trademark and patent attorney firm (marka ve patent vekili) and is not a law firm; it does not provide lawyer services, legal advice or court representation. This article is for general informational purposes only and you are strongly advised to consult a qualified professional to evaluate your personal situation. No liability is accepted that may arise from the use of the information in this article.
