PCT Application Filing Services by BizSec Advisors
File your international patent the right way. Learn the complete PCT filing process, fees, timelines, and strategy — explained by experts.
Step-by-step PCT filing process explained
Latest PCT application fees (India + international)
Complete timeline from filing to national phase
Expert insights for startups and businesses
What is a PCT Application?
The Patent Cooperation Treaty, usually called the PCT, is one of the easiest ways to start protecting an invention in multiple countries without filing separate patent applications everywhere on day one. It is run by WIPO, the World Intellectual Property Organization. For Indian inventors, startups, SMEs, and companies, the PCT is useful because it buys time. Instead of rushing into many foreign filings within 12 months, you can file one international application and usually delay final country-by-country decisions until around the 30th or 31st month from your earliest priority date.
That extra time can be very valuable. It lets you test the market, talk to investors, study competitors, improve your claim strategy, and decide whether international patent protection still makes business sense.
The PCT is an international treaty concluded in 1970 and administered by WIPO. It creates a single international filing system for patents.
| Point | Simple Explanation |
|---|---|
| What it does | Lets you file one international patent application that can later be taken into many PCT member countries. |
| What it does not do | It does not grant one global patent. Every country or regional office still decides whether to grant a patent under its own law. |
| Why people use it | To delay big foreign filing costs and get an early search report on patentability. |
| Who can use it | Any national or resident of a PCT Contracting State, including Indian applicants. |
| Current coverage | 158 PCT Contracting States as of 1 March 2026. |
Think of the PCT as one common entry gate for international patent filing, not as the final patent itself.
Need for introducing Patent Cooperation Treaty (PCT)
Before the PCT existed, inventors had to file separately in every country very quickly. That created four major problems:
- Different forms, languages, deadlines, and formal rules in each country.
- Heavy upfront spending on translations, local patent agents, and government fees.
- Only 12 months under the Paris Convention to decide where to file abroad.
- Very little early feedback on whether the invention looked patentable before spending big money.
The PCT was introduced to solve these issues by creating a more uniform process, giving applicants more time, and adding an international search and written opinion before national phase entry.
Features of Patent Cooperation Treaty (PCT) system
| Feature | What it means in practice |
|---|---|
| Single international filing | One application can keep your options open in all PCT member states. |
| Two-stage system | First comes the international phase, then the national or regional phase. |
| International Search Report (ISR) | You get a prior art search done by an approved International Searching Authority (ISA). |
| Written Opinion | You get an early view on novelty, inventive step, and industrial applicability. |
| International publication | The application is usually published at 18 months from priority. |
| Optional Chapter II examination | You may ask for a deeper preliminary examination before entering countries. |
| Common formal standards | If your PCT application is formally accepted, many later formal issues become easier to manage. |
For Indian applicants filing through RO/IN, the main practical benefit is that you can file electronically through ePCT and choose from multiple International Searching Authorities such as India, EPO, USPTO, Japan, Australia, China, and Sweden, subject to the rules applicable at that time.
Advantages of Patent Cooperation Treaty (PCT)
- More time to decide where to file abroad.
- One initial filing instead of multiple immediate foreign filings.
- An international search report helps you understand the prior art early.
- Better timing for fundraising, licensing, and partner discussions.
- Helps preserve your priority date across PCT member states.
- Useful for inventions with uncertain global potential, because you can wait before spending country by country.
Why founders like it: The PCT often matches startup reality: the product is still evolving, the market is not fully proven, and cash must be used carefully.
Disadvantages and limitations of Patent Cooperation Treaty (PCT)
- No worldwide patent is granted through the PCT itself.
- The initial international filing can still be expensive, especially for startups.
- It can delay final grant because you are adding an international stage before national examinations.
- If you only care about one or two foreign countries, direct Paris Convention filings may sometimes be cheaper.
- Translations, local agents, and country-specific prosecution costs still arrive later at national phase entry.
- A positive ISR or written opinion is helpful, but it does not guarantee grant in any country.
So the PCT is not automatically the best route for everyone. It is a strategy tool, not a magic shortcut.
Patent Cooperation Treaty (PCT) application fees and phases
PCT fees come in layers. Some are paid during the international phase, and many more may be paid later when you enter the national phase in individual countries.
| Phase | Main actions | Typical timing |
|---|---|---|
| International phase | Filing, formal check, search, written opinion, publication, and optional preliminary examination. | From filing up to about month 30/31 from priority |
| National/regional phase | Entry into selected countries or regional offices for local examination and grant. | Usually at month 30 or 31 |
| International phase fee bucket | Usual payer | How beginners should think about it |
|---|---|---|
| Transmittal fee | Paid to the Receiving Office | This is for processing the filing. In India, e-filing through RO/IN avoids this fee, but paper filing does not. |
| International filing fee | Paid via the Receiving Office to WIPO | This is the main WIPO filing fee and is the biggest early cost. |
| Search fee | Paid to the chosen ISA via the Receiving Office | This depends on which search authority you choose. India is usually the most budget-friendly option for Indian applicants. |
| Handling fee | Only if Chapter II is requested | This applies if you ask for international preliminary examination. |
| Preliminary examination fee | Only if Chapter II is requested | This depends on the IPEA and whether the same office did the international search. |