The PCT (Patent Cooperation Treaty): An Inventor's Guide to International Protection

Imagine having to file a separate patent application in every country you want protection — 156 separate filings, 156 agents, 156 languages. The PCT treaty solved that nightmare with a unified system. But it is not actually an "international patent" — it is an international application that simplifies the filing path.

What Does the PCT Offer?

The PCT is an international treaty administered by WIPO that allows a unified international patent application valid as a basis for registration in 156 member countries, including Saudi Arabia.

There is no "PCT patent" in itself. PCT consolidates 30 months of administrative work into one application, after which you enter the "national phase" in each country you target.

The International Phase (30 months)

Month 0: file the international application via SAIP. An international filing date is granted.

Month 16–18: International Search Report (ISR) from an authorized authority, assessing prior art.

Month 18: the application is published publicly.

Month 22 (optional): International Preliminary Examination (IPER).

Month 30: end of international phase. You must enter the national phase in every targeted country.

The National Phase

Pick the countries where you actually want protection and file in each under its national rules. You benefit from priority and the prior international search.

This phase is the most expensive — but it lets you pick countries 30 months after real market signals, reducing risk.

Why Is PCT Better Than Direct Filing?

Time flexibility: 30 months to pick countries vs. only 12 months in direct route.

Unified international search: one report leveraged by every national office.

Deferred cost: heavy costs come in the national phase, not upfront.

International signal: publishing your application internationally deters competitors.

When PCT Does Not Work

If you target only one country, direct filing is cheaper and faster.

If you target a non-PCT country (rare, but exists), PCT will not help.

If your invention is simple and not internationally marketable, PCT investment is unjustified.

Cost

WIPO base fees: about USD 1,500 for the international application + international search.

National phase: SAR 4,000–15,000 per country, depending on local rules and agent fees.

Total PCT cost across 5 major countries: SAR 60,000–120,000 over 4 years.

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