How to File a PCT Application Online (ePCT)
Last revised:
April 19, 2026
WIPO's ePCT system allows you to file international patent applications entirely online — from initial filing through to national phase entry management. This tutorial covers the filing process step by step.
Before You Start
You need: a WIPO account (create at pct.wipo.int), a completed specification, claims, abstract, and drawings, applicant and inventor details, and a credit card or bank account for fee payment.
Step-by-Step Filing
- Log in to pct.wipo.int and select "ePCT" → "New International Application"
- Select your receiving office (typically your national patent office or the International Bureau)
- Complete the Request form (PCT/RO/101): applicant details, inventor details, priority claim (if claiming priority from an earlier application), and designation of states
- Upload the specification, claims, abstract, and drawings as PDF files
- Select your International Searching Authority (ISA) — the EPO, USPTO, JPO, KIPO, or other authorised ISA
- Calculate fees: international filing fee (CHF 1,330, reduced for online filing), search fee (varies by ISA, $1,000–$2,500), and transmittal fee (varies by receiving office)
- Pay online
- Submit
After Filing
Month 0: Filing receipt with international application number and filing date.
Month 3–4: Priority document (if claiming priority) must be filed or made accessible via DAS (Digital Access Service).
Month 16: International Search Report (ISR) and Written Opinion issued by the ISA.
Month 18: International publication (automatic).
Month 22 (optional): File a demand for International Preliminary Examination (Chapter II) if you want a second opinion before national phase.
Month 30: National phase entry deadline in most countries. File translations, pay national fees, appoint local agents.
ePCT Tools
ePCT provides real-time status tracking, document upload for amendments, communication with the International Bureau, and national phase entry management — all through a single online interface.
Sources
- WIPO — ePCT System — Official online filing and management system for PCT applications
- WIPO — PCT International Patent System — Overview of the PCT process and national phase entry
- WIPO — PCT Applicant's Guide — Comprehensive guide for PCT applicants
- WIPO — PCT Fee Tables — Current PCT filing, search, and examination fees
This article is part of the iInvent Encyclopedia — the world's most comprehensive knowledge base for inventors. It is intended for educational purposes and does not constitute legal advice. For guidance specific to your situation, consult a qualified patent attorney.
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Suspendisse varius enim in eros elementum tristique. Duis cursus, mi quis viverra ornare, eros dolor interdum nulla, ut commodo diam libero vitae erat. Aenean faucibus nibh et justo cursus id rutrum lorem imperdiet. Nunc ut sem vitae risus tristique posuere.