Topic 122 — Patent Cooperation Treaty (PCT)

The Patent Cooperation Treaty (PCT) — concluded 19 June 1970 in Washington, D.C., effective 1 January 1978 — is the world's most widely used international patent filing system. Administered by the WIPO from headquarters in Geneva, the PCT provides a unified framework for filing patent applications in multiple countries. With 157+ contracting states (as of 2024), it covers virtually all economically significant countries. The 2024 figures show 278,000+ international applications filed annually. India became a member on 7 December 1998 — coinciding with India's WTO accession and significant IP framework modernization. The PCT operates through a TWO-PHASE STRUCTURE: (1) INTERNATIONAL PHASE — single international application filed with receiving Office, examined by International Searching Authority (ISA) and optionally International Preliminary Examining Authority (IPEA); (2) NATIONAL PHASE — applicant chooses which countries to enter (within 30 months from priority date). Indian Patent Office (IPO) acts as receiving Office for Indian applicants and as ISA/IPEA for global applicants since 2013. The Indian Patent Office became an International Searching Authority (ISA) and International Preliminary Examining Authority (IPEA) in 2013. Indian applicants increasingly leverage PCT — particularly in pharmaceuticals, IT, biotechnology, automotive, electronics. The 2017 Patents Rules introduced framework for PCT applications. The PCT system's key advantages: (1) ONE APPLICATION for global protection; (2) DELAYED national phase decision (30 months); (3) PRELIMINARY EXAMINATION informing applicants of patentability; (4) STREAMLINED translations and fees; (5) WIDESPREAD coverage. This topic walks through every aspect of PCT — phases, advantages, India's engagement, recent developments, and strategic considerations.

1. PCT Foundational Framework

A. Origin and Effective

Concluded 19 June 1970 in Washington, D.C.
Effective 1 January 1978.
Administered by WIPO.
Headquartered in Geneva.

B. Membership

157+ contracting states (as of 2024).
Virtually all economically significant countries.
India member since 7 December 1998.
Universal applicability for major economies.

C. PCT in International Patent System

Most widely used international patent filing route.
Annual filings: 278,000+ (2023).
Top filers: China (1,693), Japan (969), Germany (886), Republic of Korea (632), USA (1,547).
India's rank: Top 11 country.

2. The Two-Phase Structure

A. International Phase

✅ PCT International Phase — Step-by-Step

1. INTERNATIONAL APPLICATION FILING · Filed with Receiving Office (RO). · Indian applicants → IPO Delhi/Mumbai/Chennai/Kolkata. · One application designating multiple states. · Single language (Indian: English). · Single set of fees. 2. INTERNATIONAL SEARCH (Article 17) · International Searching Authority (ISA) examines. · Searches prior art globally. · Issues International Search Report (ISR). · Issues Written Opinion of ISA. · Indian Patent Office is ISA since 2013. 3. INTERNATIONAL PRELIMINARY EXAMINATION (Article 32) [OPTIONAL] · International Preliminary Examining Authority (IPEA). · Detailed patentability analysis. · Issues International Preliminary Report on Patentability (IPRP). · Significant cost; applicant's choice. · Indian Patent Office is IPEA since 2013. 4. INTERNATIONAL PUBLICATION (Article 21) · Application published 18 months from priority date. · Public domain disclosure. · Notice to interested parties.

B. National Phase

✅ PCT National Phase — 30-Month Decision Window

5. NATIONAL PHASE ENTRY (Article 22, 39) · Applicant chooses countries within 30 months from priority date. · Sometimes 31 months (specific countries). · Each chosen country examines according to its own law. 6. NATIONAL EXAMINATION · Each country examines under domestic law. · May refuse on national grounds. · May modify claims for that country. 7. NATIONAL GRANT/REFUSAL · Each country grants/refuses independently. · Patent rights effective from international filing date. · Independent national patents. INDIAN NATIONAL PHASE: · Section 7(1A) Patents Act — national phase application. · Section 11A — publication. · Section 12 — examination. · Indian Patents Office processes.

3. Key Advantages of PCT

A. Streamlining International Patent Filing

Aspect	Direct Filing	PCT
Application	Multiple separate applications.	ONE international application.
Filing in multiple countries	Multiple offices, multiple agents, multiple translations.	Single filing through Receiving Office.
Initial fees	Multiple full sets.	Single international application fee.
Search	Multiple searches.	Single ISR.
Decision time	Multiple deadlines.	Single 30-month decision window.
Information	Limited intermediate analysis.	ISR + Written Opinion + IPRP available.
Strategic flexibility	Limited.	Significant — assess viability before national filing.

B. India's Specific Benefits

Indian applicants can file globally through Indian PCT system.
Cost-effective for global expansion.
Streamlined for SMEs and startups.
Government promotion of PCT for innovators.
Significant for pharmaceutical, IT, biotechnology sectors.

4. India as ISA/IPEA — Major Achievement

✅ Indian Patent Office as ISA/IPEA (Since 2013)

Indian Patent Office (IPO) became: · International Searching Authority (ISA) since 2013. · International Preliminary Examining Authority (IPEA) since 2013. Significance: · Indian PCT applicants can choose IPO as ISA/IPEA. · Cost savings (reduced fees). · Convenience (English language, time zone). · Capacity demonstration globally. · Aligns with "Make in India" innovation focus. Languages Supported: · English (primary). · Hindi (option). Global Recognition: · Quality assessment by WIPO. · International credibility. · Indian innovation ecosystem strengthened.

5. Indian PCT Process

A. As Receiving Office

Indian Patent Office Delhi/Mumbai/Chennai/Kolkata.
Receives international applications from Indian applicants.
Forwards to WIPO.
Manages priority and procedural compliance.

B. As ISA/IPEA

Performs international search.
Issues International Search Report (ISR).
Issues Written Opinion.
Optionally performs preliminary examination.
Issues International Preliminary Report on Patentability (IPRP).

C. Patent Examination Framework

Section 7(1A) — National phase application.
Section 11A — Publication.
Section 12 — Examination.
Section 12(2) — Examination must commence within prescribed time.
Section 24A-24D — Pre-grant opposition.

6. India's PCT Statistics

✅ India's PCT Engagement (2023-2024)

India PCT Applications: · 2023: ~24,000+ international applications. · Growing year-over-year. · Top sectors: Pharmaceutical, IT, Telecommunications, Biotechnology, Automotive. · Top filers: Tata Consultancy Services, Reliance Industries, Indian Institutes of Technology, IIT Bombay, IIT Delhi, IISc Bangalore. Indian National Phase Entries: · 2023: ~24,000+ international applications designating India. · Major source countries: US, Japan, Germany, China, Republic of Korea. · Pharmaceutical and IT dominant. Indian PCT Trends: · Continued growth in outbound applications. · Indian universities + research institutions increasingly active. · Focus on emerging tech (AI, IoT, biotechnology). · Government promotion of innovation ecosystem. India Innovation Index Rise: · Global Innovation Index — significant rise. · Quality + quantity improvements.

7. PCT Strategic Considerations

A. Indian Applicants

✅ PCT Strategy for Indian Applicants — eight points

For global protection, file PCT instead of multiple direct filings.

For ISA selection, consider Indian Patent Office (cost + language).

For preliminary examination, evaluate IPEA value (cost vs. information).

For national phase entry, prepare 30-month decision matrix.

For commercial assessment, leverage 30-month delay.

For prior art response, leverage ISR + Written Opinion.

For cost optimization, focus on key markets.

For technology transfer, integrate PCT with global strategy.

B. International Filers Designating India

✅ PCT for International Filers — six points

For India entry, file PCT national phase within 30 months.

For Section 3(d) compliance, prepare therapeutic efficacy data (pharmaceuticals).

For Section 3(k) compliance, prepare technical effect demonstration (software).

For pre-grant opposition, monitor Indian publications.

For working requirements, consider Indian manufacturing or licensed Indian generics.

For litigation, be prepared for Section 84 compulsory licensing risk.

8. Recent PCT Developments

A. Statistical Trends

278,000+ PCT applications globally (2023).
Continued growth.
China leads filings; followed by US, Japan, Germany, Korea.
India's rank: Top 11 globally.

B. Indian PCT Cases

📖 Telefonaktiebolaget LM Ericsson v. Lava International, 2024:DHC:2698

Background — Ericsson SEPs covering Indian PCT national phase entries.

Significance — PCT framework operational; Indian SEP enforcement active.

📖 Aventis Pharma S.A. v. Algreat Industries, 3 February 2025 (Del HC)

Background — Patent enforcement on PCT-derived Indian patent.

Holding — ₹5L damages + 4 weeks imprisonment for contempt.

Significance — Recent (2025) demonstration of PCT-derived patent enforcement.

9. PCT vs Other International Patent Routes

Route	Description	Use
PCT	International filing system; 30-month national phase decision.	Most common for international applicants.
Paris Priority	12-month priority for foreign filings; direct national filings.	Limited; for specific markets.
Direct Foreign Filing	Direct in each foreign country.	For specific country focus.
EPC (European Patent Convention)	Single European application; granted patents validated nationally.	For European protection.
Eurasian Patent	Single Eurasian application; covers former USSR states.	For Eurasian protection.
African Regional	OAPI (West Africa); ARIPO (English-speaking Africa).	For African protection.

10. Memory Aid — Quick Recall

✅ Quick Recall — PCT

PCT — concluded 19 June 1970 Washington; effective 1 January 1978; administered by WIPO.

157+ contracting states (2024).

India member 7 December 1998.

~278,000 international applications annually (2023); India ranks Top 11.

Two phases: International + National.

International phase: filing → ISR → Written Opinion → IPEA (optional) → IPRP.

National phase: 30 months from priority date.

Indian Patent Office acts as Receiving Office.

Indian Patent Office is ISA/IPEA since 2013.

Indian PCT applications ~24,000 annually.

Languages: English, Hindi, others.

Section 7(1A), 11A, 12 Patents Act — national phase framework.

Pre-grant opposition (Section 25) operational.

🎯 EXAM POINTERS — TOPIC 122

Patent Cooperation Treaty (PCT) — concluded 19 June 1970 Washington, D.C.
PCT effective 1 January 1978.
Administered by WIPO from Geneva.
157+ contracting states (2024).
India member since 7 December 1998.
Two-phase structure: International Phase + National Phase.
International Phase: International Application → ISR → Written Opinion → (Optional IPEA → IPRP) → International Publication.
International Search Report (ISR) — issued by ISA.
International Preliminary Report on Patentability (IPRP) — issued by IPEA (optional).
International Publication — 18 months from priority date.
National Phase Entry — within 30 months from priority date (sometimes 31).
Each designated country examines under its own law.
Indian Patent Office (IPO) acts as Receiving Office.
IPO is International Searching Authority (ISA) since 2013.
IPO is International Preliminary Examining Authority (IPEA) since 2013.
278,000+ PCT applications globally (2023); India ranks Top 11.
Indian PCT applications ~24,000 annually.
Section 7(1A) Patents Act — national phase application.
Section 11A Patents Act — publication.
Section 12 Patents Act — examination.
Section 24A-24D Patents Act — pre-grant opposition.
Indian PCT cases: Telefonaktiebolaget v. Lava 2024; Aventis v. Algreat 2025.