Patents are territorial. An Indian patent protects an invention only in India, and protection elsewhere needs a filing in each country or region. Where, when and by which route you file will shape your cost and coverage for years. We handle filings before the Indian Patent Office and international filings under the Paris Convention and the Patent Cooperation Treaty (PCT), for corporations, inventors and law firms.

What We Offer

• Indian filings at all four Patent Office locations (Kolkata, Delhi, Mumbai and Chennai), including ordinary, convention and divisional applications, with provisional or complete specifications.

• PCT national phase entry in India for foreign applicants.

• PCT international applications filed with the Indian receiving office or WIPO.

• Paris Convention applications in target countries within 12 months of the first filing.

• Foreign filing permission (Form 25) under Section 39 for residents of India who want to file abroad before, or within six weeks of, filing in India.

• Filing strategy on route, jurisdictions and timing, based on your markets and budget.

Our Approach

1. Map the markets. We identify where you manufacture, sell and face competitors, and recommend jurisdictions accordingly.

2. Choose the route. We compare the Paris Convention and PCT routes on cost, timing and flexibility for your situation.

3. Prepare the papers. We prepare all forms, collect signatures and assignments, and track every document that can be filed later, so nothing lapses.

4. File and coordinate. We file in India directly and coordinate national phase and Convention filings abroad through our partner attorneys, with K&K as your single point of contact.

Why Khurana & Khurana

• One of India's leading PCT filers. We handle a high volume of PCT filings each year and know the timing pitfalls at each stage.

• Worldwide coordination. Our partner network covers the USA, Europe, China, Japan, Korea and other key jurisdictions, so you receive one report and one invoice across countries.

• Deadlines that do not slip. Every filing is docketed from day one, with advance alerts for each statutory deadline.

Documents Needed to File a Patent Application in India

• Name, address and nationality of each applicant and inventor.

• Provisional or complete specification, with claims, abstract and drawings, in English or Hindi.

• Priority document and, where needed, its verified English translation (can be filed later).

• Power of attorney (Form 26) signed by the applicant (can be filed later).

• Proof of right from the inventors to the applicant, within six months of filing.

• Statement and undertaking on corresponding foreign applications (Form 3), within six months of filing.

Key Patent Deadlines in India

Paris Convention or PCT?

Every applicant seeking protection outside India must choose one of these two routes. The table compares them on filing, timing, cost and examination, to help you decide which suits your markets and budget.

Planning to file in India or abroad?

Contact us at info@khuranaandkhurana.com. We will compare the Paris Convention and PCT routes for your markets and give you a dated filing plan.

Download Pdf for more information

Patent Filing in India - Requirements and Timeline