Question 1

What is the PCT (Patent Cooperation Treaty)?

Accepted Answer

The PCT is an international treaty administered by WIPO that allows inventors to seek Patent protection simultaneously in 158 contracting states by filing a single international application. The PCT does not grant patents itself; instead, it delays the need to enter individual countries, giving applicants up to 30-31 months from the priority date to decide where to pursue national patents.

Question 2

What are the advantages of filing a PCT application?

Accepted Answer

Key advantages include: (1) Extended timeline - up to 30-31 months to decide target countries instead of 12 months under Paris Convention; (2) Single filing - one application covers 158 countries initially; (3) Prior art search - International Search Report (ISR) provides early indication of patentability; (4) Cost deferral - major costs of national filings and translations are delayed; (5) Flexibility - strategic decisions on country selection can be made based on business developments and search results.

Question 3

What is the deadline for filing a PCT application?

Accepted Answer

A PCT application must be filed within 12 months of the priority date (the filing date of the first application for the same invention). If you miss this deadline, you cannot claim priority from the earlier application. The PCT application establishes a single international filing date that is recognised in all PCT contracting states.

Question 4

How do I file a PCT application after filing in India first?

Accepted Answer

If you have filed a patent application in India (provisional or complete specification), you can file a PCT application claiming priority from the Indian filing within 12 months of the Indian filing date. This is known as the "India first" route. The process involves: (1) File patent application in India as your priority application; (2) Wait at least six weeks from the Indian filing date, provided no secrecy directions are issued by the Indian Patent Office during this period—if a PCT application is to be filed before expiry of six weeks, a Foreign Filing License under Section 39 of the Patents Act is mandatory; (3) File PCT application within 12 months of the Indian filing date, claiming priority—note that the PCT application must contain a complete specification and cannot itself be a provisional application; (4) The PCT application then provides up to 30-31 months from the original Indian filing date to enter national phases in selected countries. This route is commonly used by Indian applicants as it establishes a priority date, allows time to assess commercial potential, and defers the significant costs of multi-country filings.

Question 5

What is the advantage of the PCT route over filing directly in multiple countries?

Accepted Answer

The PCT route provides two key advantages. First, extended decision time: under the Paris Convention, you have only 12 months from your priority filing to enter individual countries, but with the PCT route, you get 30-31 months from your priority date. This additional 18-19 months allows you to assess commercial viability, review the International Search Report for patentability indicators, secure funding or licensing partners, and make informed country selection based on business developments. Second, cost deferral: the major costs of national filings (official fees, translations, local attorney fees) are deferred until the 30/31-month deadline approaches, rather than incurring costs in multiple countries simultaneously at the 12-month mark. National phase entry deadlines vary by country: India, EPO, UK, Australia, and South Korea allow 31 months; US, China, Japan, Canada, and Brazil require entry within 30 months from the priority date.

Question 6

What is the national phase and when must it be entered?

Accepted Answer

The national phase is when the PCT application enters individual countries or regions for substantive examination and potential grant. Most countries require national phase entry within 30 or 31 months from the priority date. India, EPO, and several other countries allow 31 months, while the US, China, Japan, and others require entry within 30 months. Missing these deadlines typically results in loss of rights in that country.

Question 7

What is the International Search Report (ISR)?

Accepted Answer

The ISR is a report prepared by an International Searching Authority (ISA) that lists prior art documents relevant to the patentability of the claims. It is accompanied by a Written Opinion that provides a preliminary, non-binding assessment of patentability (novelty, inventive step, industrial applicability). The ISR helps applicants assess the strength of their application before incurring national phase costs.

Question 8

Can I amend my PCT application after filing?

Accepted Answer

Yes, amendments are possible at several stages: (1) Article 19 amendments - claims can be amended after receiving the ISR; (2) Article 34 amendments - claims, description, and drawings can be amended during Chapter II (international preliminary examination); (3) National phase amendments - most countries allow amendments during national phase prosecution. Strategic amendments can address prior art cited in the ISR and strengthen the application.

Question 9

What is Chapter II (International Preliminary Examination)?

Accepted Answer

Chapter II is an optional procedure where applicants can request international preliminary examination by filing a Demand. The International Preliminary Examining Authority (IPEA) issues an International Preliminary Report on Patentability (IPRP Chapter II). This provides a more thorough patentability assessment and allows amendments before national phase. It can be particularly useful for strengthening applications before entering expensive jurisdictions.

Question 10

Which countries are covered for national phase entry?

Accepted Answer

National phase entry is handled directly in India, with coordination through a network of foreign associates for entries in the United States, European Patent Office (EPO), China, Japan, South Korea, Australia, Canada, Brazil, Singapore, United Kingdom, and other PCT contracting states.

Question 11

What costs are involved in the PCT process?

Accepted Answer

PCT costs include: (1) PCT filing fees (international filing fee, search fee, transmittal fee); (2) Professional fees for drafting and filing; (3) Optional Chapter II fees; (4) National phase fees (official fees, translation costs, professional fees) for each country entered. The PCT system defers significant costs by allowing 30-31 months to decide which countries to enter, enabling strategic cost management based on business priorities.

Question 12

What does PCT filing strategy involve?

Accepted Answer

PCT filing strategy typically involves: (1) Assessing patentability before PCT filing; (2) Drafting claims suitable for multiple jurisdictions; (3) Selecting an appropriate International Searching Authority; (4) Analysing the ISR and determining response strategies; (5) Deciding between Chapter II and direct national phase entry; (6) Selecting target countries based on business objectives; (7) Managing timelines and budgets for national phase entries.

PCT Filing Services

Practice Overview

PCT Filing Process

Priority Filing

PCT Filing

International Search

Publication

Chapter II

National Phase

Key Information

PCT Service Offerings

PCT Application Drafting

PCT Filing & Management

ISR & Written Opinion Response

International Preliminary Examination

National Phase Entry

PCT Portfolio Management

National Phase Entry - Key Jurisdictions

Technology Domains

Frequently Asked Questions

Patent Drafting

Patent Search

Patent Prosecution

Freedom to Operate

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