Who Can File a Patent Application in India: Eligibility and Requirements

Not every person who has an idea can walk up to the Indian Patent Office and file a patent application. The law is specific about who has the legal standing – or locus standi – to do so. Section 6 of the Patents Act, 1970 lays down an exhaustive list of persons entitled to apply for a patent in India. Understanding this provision is foundational to patent law – it determines who can initiate the process, who can transfer that right, and what happens when an inventor is no longer alive.

The governing provision: Section 6 of the Patents Act, 1970 🔗

Section 6 of the Patents Act, 1970 identifies three categories of persons who can file a patent application in India: (a) the true and first inventor, (b) an assignee of such inventor, and (c) the legal representative of a deceased person who was entitled to apply. Sub-section (2) further clarifies that any of these persons may apply either alone or jointly with another person. Importantly, the term “person” here covers both natural persons (human beings) and juridical persons – companies, firms, and government bodies are equally eligible to hold patent rights.

The true and first inventor 🔗

The primary and most fundamental category is the true and first inventor – the person who actually conceived and developed the invention. Under Section 6(1)(a), any person claiming to be the true and first inventor may file a patent application. The law places the emphasis on conception – the person must have made a genuine intellectual contribution to the inventive idea, not merely helped execute someone else’s concept.

Who does NOT qualify as the true and first inventor? 🔗

The Patents Act itself explicitly excludes two categories from being considered the “true and first inventor”: the first importer of an invention into India, and a person to whom an invention is first communicated from outside India. Beyond this statutory exclusion, the following also do not qualify: those who only financed the invention, those who performed routine testing or data collection, and supervisors who had no direct role in the inventive step. Simply being present in the lab or funding the research does not make someone an inventor.

It is also worth noting that there is no age restriction for filing a patent application in India. A minor can technically be an inventor and file an application, though practical representation issues may arise in such cases.

Assignees: when the right to file is transferred 🔗

An inventor is not required to file the patent application personally. Under Section 6(1)(b), an assignee – someone to whom the inventor has legally transferred the right to apply – can file in place of the inventor. This provision is particularly significant in commercial and employment contexts, where companies routinely own the intellectual property created by their employees.

How assignment works in practice 🔗

The assignment must be in writing to be valid, as mandated by Section 68 of the Patents Act. When the assignee files the application, they must also comply with Section 7, which requires submission of a “Proof of Right” document. This proof can take the form of a declaration by the inventor confirming the assignee, a notarized deed of assignment, or – in the case of international PCT applications – a Rule 4.17(ii) statement. Without valid proof of right, the Controller can reject the application under Section 15 or even revoke a patent after it has been granted.

Employment assignments are a common example: when an employee invents something as part of their job duties, their employment contract typically vests the patent rights in the employer. The employer, as assignee, then files the application. The Act’s definition of “assignee” is broad – it includes an assignee of an assignee, meaning rights can pass through multiple transfers and still remain valid for filing purposes.

Legal representatives of a deceased inventor 🔗

Death of an inventor does not extinguish the right to seek patent protection for their invention. Section 6(1)(c) allows the legal representative of a deceased person – that is, anyone who in law represents the estate of that person – to file the application, provided the deceased was entitled to apply immediately before their death. The Act’s definition of “legal representative” under Section 2(k) includes executors, heirs, and administrators of the deceased’s estate.

To establish their right to file, legal representatives typically need to produce documentary evidence such as a will, a succession certificate, or a probate order. This provision ensures that inventions do not fall into the public domain simply because the inventor passed away before completing the filing process – the estate can proceed on their behalf and secure the patent for the benefit of the heirs.

Joint applicants: co-inventors and combined rights 🔗

Modern research is rarely a solo endeavour. Collaborative inventions are common in academic institutions, R&D labs, and startups. Section 6(2) expressly permits applications to be filed by two or more persons jointly. Each joint applicant must have made a substantive, independent contribution to the invention – not merely provided assistance or funding.

Rights and responsibilities of joint applicants 🔗

Once a patent is jointly granted, the co-owners’ rights are governed by Section 50 of the Patents Act. Under this provision, each co-owner is entitled to an equal, undivided share in the patent. Importantly, unlike some other jurisdictions, Indian law allows a joint owner to grant a licence under the patent to a third party without the consent of the other co-owners, unless there is a separate agreement restricting this. However, assigning one’s share in the patent to an outsider does require the consent of the other co-owners. This makes it critical for joint applicants to enter into a co-ownership agreement at the outset, clearly defining how licensing, commercialisation, and eventual assignment will be handled.

If a dispute arises between joint applicants on how to proceed with the application, Section 7(5) empowers the Controller to intervene and give appropriate directions – including allowing the application to proceed in the name of only one or some of the parties.

Foreign nationals and entities 🔗

India’s patent system is open to the world. Foreign individuals and companies can file patent applications in India on the same footing as Indian applicants – subject to one key restriction under Section 134 of the Patents Act. If a foreign national’s home country does not grant Indian citizens reciprocal patent rights, that person cannot obtain a patent in India. In practice, this restriction has limited application since most countries are signatories to international IP treaties.

Filing requirements for foreign applicants 🔗

Foreign applicants must provide an address for service in India – typically the address of a registered Indian patent agent. This ensures that all official communications from the Patent Office can be formally served. Foreign companies commonly file through the Patent Cooperation Treaty (PCT) route, which allows an international application to enter the national phase in India. Under Section 7(1A), every international PCT application designating India is deemed to be an application under the Patents Act, provided a corresponding application is also filed before the Controller in India.

An additional obligation applies to Indian residents who wish to file abroad. Under Section 39 of the Patents Act, a resident of India cannot file a patent application in a foreign country for an invention made in India without first obtaining prior permission from the Indian Patent Office – unless they file in India first and wait for six weeks after that filing date. Violation of this provision can result in the invention being denied patent protection in India entirely.

Proof of right: the thread connecting eligibility to filing 🔗

Eligibility under Section 6 is a necessary condition, but it must be established formally when the application is filed. Section 7 of the Patents Act requires that where an application is made by an assignee or legal representative, they must furnish proof of their right to apply – either with the application itself or within a prescribed period thereafter. The inventor filing in their own name satisfies this by declaring their status in Form 1 of the patent application. This declaration must also name the true and first inventor, ensuring transparency about the origin of the invention.

Courts have reinforced the importance of this documentation. In Dow Agrosciences LLC v. The Controller of Patents, it was held that PCT statements are sufficient proof for international applications entering the national phase – providing important practical guidance for multinational filers. Failure to submit adequate proof of right can lead to outright rejection of the application or post-grant revocation of the patent.

What if the wrong person files first? 🔗

The Indian patent system generally follows a “first to file” principle – the applicant who files first gets priority over a later applicant for the same invention. However, the law protects the true inventor even if someone wrongfully files first. Under Section 25 of the Patents Act, the true inventor can oppose a patent application on the ground that the invention was “wrongfully obtained” from them. If the patent has already been granted, Section 52 allows the true and first inventor to have the patent granted in their own name instead. Establishing this requires comprehensive evidence of the research and development process – a strong reason to maintain meticulous records of your inventive work.

What do you think? If two colleagues jointly develop an invention at work but one of them contributed far more to the core idea, should the law require proportional ownership rather than equal shares? And in employment contexts, where the employer automatically becomes the assignee – do you think this arrangement adequately balances the interests of the individual inventor with those of the organisation?

References

1. https://www.wipo.int/wipolex/en/text/128091
2. https://indiankanoon.org/doc/1937976/
3. https://www.lexology.com/library/detail.aspx?g=adff1e84-b5aa-4e1f-8cb0-5bfa5fa98ee1
4. https://thelegalschool.in/blog/section-6-of-patent-act
5. https://www.commonlii.org/in/legis/cen/num_act/pa1970109/
6. https://ipindia.gov.in/writereaddata/Portal/Images/pdf/Final_FREQUENTLY_ASKED_QUESTIONS_-PATENT.pdf
7. https://patentbusinesslawyer.com/applying-for-patent-in-india/