PCT national phase in Uzbekistan: the 31-month window

A Tashkent startup built a water-purification device, filed a PCT international application on it, and got back to fundraising. The investor deck said it plainly: "international patent granted, protection in 150+ countries." Two years later the device went into production — at a plant near Chirchiq, where it had been designed. Six months after that, the same contract manufacturer that assembled the first batches started selling its own version across Uzbekistan. The founder came to us with a printout of the international application and one question: how do we sue. The answer he wanted didn't exist. A PCT application is not a patent, nobody had entered the national phase in Uzbekistan, and the 31-month deadline had long passed. On the home market — where the product is physically made — there had never been a single day of protection.

This is the most common and most expensive misunderstanding around the PCT. Let's lay out what the system actually gives you, the one deadline you cannot miss, and what you really file at the Intellectual Property Center (IP Center) when you enter the national phase.

The PCT is not an "international patent" — it's a deferral

The Patent Cooperation Treaty (PCT) is administered by WIPO, and Uzbekistan is a contracting state. But there is no such thing as an "international patent." The PCT issues no grant at all. It is a procedure that lets a single application reserve a filing date across every contracting state and postpone the expensive decision of which countries to actually pursue.

What the international phase gives you:

• A single international filing date that counts as your filing date in every country you later enter.
• An international search — a report on how novel your invention is against the global state of the art. It tells you early whether national phases are even worth the spend.
• Publication of the application at 18 months from the priority date.
• Time. Deferral is the PCT's core product. Instead of filing separate national applications in a dozen countries within the 12-month Paris priority year, you keep one international application alive and decide country by country much later.

What it does not give you is a patent. An exclusive right to the invention in Uzbekistan exists only when the international application turns national: you enter the national phase at the IP Center, clear examination, and receive an Uzbek patent under the Law of the Republic of Uzbekistan "On Inventions, Utility Models and Industrial Designs." No national-phase entry, no patent, nothing to enforce. That is exactly what sank the startup above.

31 months: the one deadline you cannot miss

The deadline to enter the PCT national phase in Uzbekistan is 31 months from the priority date — not from the international filing date, not from publication, but from the earliest priority date claimed in the application. That date is the reference point against which the examiner measures your invention.

Here is a real timeline, to show how fast the window closes:

Two things matter here. First, the Paris priority period for inventions and utility models is twelve months (the six-month period applies only to industrial designs and trademarks). Second, the 31-month window is not "roughly a year and a half after publication, plenty of time." From publication to the deadline you have only about thirteen months — and in that window you must translate the entire application, appoint a patent attorney, and pay the fees.

Missing the deadline is usually irreversible. The PCT does provide a reinstatement mechanism (Rule 49.6): if the failure was unintentional or occurred in spite of due care, you can petition to restore your rights. But that is the office's discretion, not your entitlement — never treat it as a safety net. The working rule: month 31 is a wall, not a milestone. The decision to enter Uzbekistan is made in advance, not in the final week.

What you actually file at the IP Center

National-phase entry is not a button you press. It is a full package you have to assemble by the deadline:

1. A translation of the international application into Russian or Uzbek. The IP Center conducts proceedings in either. Translating the description, claims, drawings and abstract is usually the single largest cost of the whole entry: a patent application easily runs to dozens of pages of dense technical text, and you cannot paraphrase it — only translate it precisely.
2. A request to enter the national phase and the national filing fee. Fee amounts are set by the Cabinet of Ministers and revised periodically, so work from the IP Center's current schedule, not from a figure in last year's article.
3. A request for substantive examination with its own fee — in the Uzbek system, substantive examination of an invention is carried out on request, not automatically. Confirm the current rules and the time limit for filing the request.
4. A patent attorney. An applicant with no residence in Uzbekistan must act through a registered patent attorney — that is a procedural requirement, not a service add-on. A domestic applicant has no such obligation, but on a patent application, saving on an attorney usually costs more than the application itself.

The IP Center then runs a formal examination of the package, followed by substantive examination: novelty, inventive step, industrial applicability. The outcome is either a granted Uzbek patent or a provisional refusal you must answer within a set period — the same logic we walked through for trademarks in the piece on provisional refusals.

PCT national phase vs. a direct national filing — and where the Eurasian patent fits

An invention reaches protection in Uzbekistan by exactly two routes: a direct national application at the IP Center, or the PCT national phase. Let's kill a common myth straight away: the Eurasian patent does not cover Uzbekistan — the country is not a member of the Eurasian Patent Organization, and entering the PCT "Eurasian regional phase" gives you no protection in Uzbekistan itself. We unpacked that trap in the article on the Eurasian patent. For Uzbek territory the choice is always between two routes:

A rough rule: if Uzbekistan is your only or clearly primary market and you are ready to decide now, the direct national application is cheaper and simpler. You reach for the PCT when you need to buy time and insurance — the international search tells you whether national phases are worth pursuing at all, and the 31 months let you calmly decide which of a dozen countries you will really enter. But you pay for that flexibility with PCT fees and a later, more expensive entry into each country.

Term and maintenance after entry

An Uzbek invention patent runs for 20 years from the filing date — and where you enter via the PCT, the filing date is the international filing date, not the date you entered the national phase. So the deferral does not eat into your protection: the 20 years count from the international date, not from month 31.

If the same project needs faster, cheaper — though less robust — protection, there is the utility model: under current IP Center practice its term is shorter (around 8 years) and examination is lighter. Once granted, a patent is kept alive by annual maintenance fees: stop paying and it lapses early, dropping the invention into the public domain. Budget those annuities from the start rather than discovering them after the fact.

In short

• The PCT is not a patent but a deferral: one application, a search, and up to 31 months to decide.
• The national-phase deadline in Uzbekistan is 31 months from the priority date. Missing it is usually irreversible.
• From publication (month 18) to the deadline you have only about 13 months — for translation, attorney, and fees.
• The package: translation into Russian/Uzbek, an entry request and fee, a request for examination, a patent attorney for non-residents.
• The Eurasian patent does not cover Uzbekistan — the choice is always between a direct national filing and the PCT national phase.
• An invention patent runs 20 years from the international filing date, sustained by annual fees.

FAQ

Is the PCT an international patent? No. The PCT issues no patent at all. It is a procedure that fixes a filing date across every contracting state and gives you up to 31 months to decide in which countries you will pursue national patents. The patent in Uzbekistan comes into being only after national-phase entry at the IP Center and successful examination.

How long do I have to enter the PCT national phase in Uzbekistan? 31 months from the earliest priority date claimed in the application. The clock runs from the priority date — not from the international filing date and not from publication.

Can the 31-month deadline be extended? There is no full extension. There is a reinstatement mechanism under PCT Rule 49.6 if the delay was unintentional or happened despite due care. But reinstatement is at the office's discretion — don't plan around it as a backup.

Which language do I file in at the IP Center? Russian or Uzbek. Translating the entire international application into one of them is mandatory and usually the most expensive part of entry.

Do I need a patent attorney? A non-resident applicant must use one: proceedings before the IP Center are open to them only through a registered patent attorney. A domestic applicant may formally act alone, but on a patent application that is almost always a false economy.

Does the Eurasian patent protect an invention in Uzbekistan? No. Uzbekistan is not a member of the EAPO, so the Eurasian patent has no effect on its territory. Entering the PCT Eurasian regional phase also gives no protection in Uzbekistan itself — for that you need the Uzbek national phase specifically.

How long does the patent last after national-phase entry? 20 years from the international filing date (not from the entry date). It is maintained by annual fees; if they go unpaid, it lapses early.

Which is cheaper — the PCT national phase or a direct national filing? If Uzbekistan is your only or main market and the decision is already made, the direct national application is cheaper: no international PCT fees. The PCT is the better buy when you have many countries and need time to decide — you pay for the flexibility and for the international search as a filter.

The PCT does not protect an invention — it only holds the door open for 31 months. Who walks through that door in Uzbekistan is decided not by WIPO and not by your investor deck, but by an entry request filed at the IP Center on time. If you hold an international application and Uzbekistan is among your target markets, count month 31 from the priority date right now and set a reminder six months out: by the deadline the translation and the attorney should be ready, not just started. Our patent team can map the route and the dates with you.