If you are asking this question, you are not alone. It is one of the most common calls I get, usually from someone who has just left, or is about to leave, a company to build something of their own, and is not sure whether the idea they are carrying with them is actually theirs to file.

The short answer under Indian law is this: ownership does not automatically shift to the employer just because you were employed when you invented something. Unlike copyright, where the statute often hands first ownership to the employer for works made in the course of employment, the Patents Act contains no equivalent deeming provision. Whether the company or the individual owns the resulting patent turns almost entirely on the employment contract and on whether a proper assignment was executed, not on the mere fact of employment, seniority, or the use of office equipment.

That short answer, though, hides a fair amount of nuance. The rest of this note works through it properly, the way I would in a real advisory conversation.

1. Who Is Legally Entitled to File?

The Patents Act recognises three categories of applicant: the true and first inventor, an assignee of the true and first inventor, and the legal representative of a deceased person who was entitled to apply. Where an assignee files, meaning someone other than the inventor themselves, proof of right must be furnished, typically through an inventor-signed endorsement on Form 1, or through a deed of assignment filed within the prescribed time.

There is one distinction worth fixing firmly in your mind before anything else: inventorship is not the same thing as ownership.

Inventorship identifies the natural persons who actually contributed technical skill to the conception of the claimed subject matter. It is a factual question about who thought of what. Ownership identifies the person or entity legally entitled to apply for, and hold, the resulting patent. It is a legal question about title. Indian courts have consistently treated inventorship as requiring genuine technical contribution by a natural person; in V. B. Mohammed Ibrahim v. Alfred Schafranek (Mysore High Court, 1960), a financing partner who contributed capital but not technical insight was not accepted as an inventor. This distinction matters practically in a workplace setting because employees should always be named as inventors on a filing, even where the company is, correctly, the applicant.

2. Does Employment Automatically Transfer My Invention to My Employer?

No. This is the point most people get wrong, often because they are used to how copyright works, or because they assume patent law must mirror employment law more generally.

In the United Kingdom, by contrast, specific statutory provisions do allocate ownership of employee inventions to the employer where the invention is made in the course of the employee's normal duties, particularly where a special obligation exists to further the employer's interests. India has enacted no equivalent rule. As a result, in India, the contract does the work that the statute does in some other countries. If there is no contract clause assigning inventions to the company, and no separately executed assignment, the default legal position favours the individual inventor, not the employer, regardless of how the invention came about at work.

This was tested squarely in the Bombay High Court proceedings in Darius Rutton Kavasmaneck v. Gharda Chemicals Ltd. (2014 and 2015 orders). The company argued that patents obtained by its managing director should vest in the company. The Court declined to simply assume employer ownership in the absence of a clear contractual basis. The message from that case is direct: without an express duty-to-invent clause or an executed assignment, courts will not retro-assign patent rights to an employer merely because the inventor held a senior position, sat on the board, or used company facilities.

3. Does Using Company Time, Labs, or Staff Change Anything?

Using the employer's lab, budget, or junior staff does not, by itself, transfer patent ownership under Indian law. This surprises a lot of people, understandably, because it feels intuitively unfair that someone could use a company's resources and still walk away with sole title.

But these facts are not irrelevant either. They can meaningfully strengthen an employer's narrative in a dispute, for example, that the work fell within the employee's assigned duties, or that confidential information belonging to the company was misused in developing the invention. Where unauthorised use of trade secrets or confidential technical information is shown, Indian courts have granted protection even in the complete absence of a patent. In John Richard Brady v. Chemical Process Equipments (Delhi High Court, 1987), the misuse of confidential technical drawings and know-how was injuncted on trade secret grounds, entirely separate from any patent question. The practical lesson: even where you are legally entitled to file as an individual applicant, you must be careful not to carry away confidential company information in the process. The two issues, patent entitlement and confidentiality, are analysed completely separately by courts, and losing on the second can hurt you even if you win on the first.

4. Three Scenarios, and How to File Safely in Each

Scenario A: The employment contract assigns inventions to the company

Many Indian R&D employment contracts contain a present assignment of all inventions conceived in the course of employment, along with an obligation to sign whatever patent paperwork is needed. Where this exists, the correct filing structure is straightforward in principle: the employee is named as inventor, and the applicant is the company, supported either by the contractual assignment itself or by the employee executing a further assignment in the company's favour, with proof of right filed within the statutory time limit.

Filing as a personal applicant in direct contradiction of an executed assignment is a mistake that invites immediate objection during prosecution, and later, real opposition or revocation risk once the patent is granted. Assignment formalities matter here too: Section 68 requires that assignments and licences be in writing and duly executed, and registering the assignment in the Patent Office record is strongly advisable to perfect the chain of title, particularly before any future funding round or acquisition diligence process.

Scenario B: The contract is silent, and no assignment has been executed

Where the employment contract says nothing about invention ownership, and no separate assignment has ever been signed, Indian law does not automatically vest the patent in the employer. The employee, as the true and first inventor, may file as the applicant in their own name.

That said, this scenario calls for real practical caution, not blind confidence. Company confidential information should not be used in developing or describing the invention. A clean evidentiary trail should be actively maintained, showing that the inventive concept and its reduction to practice genuinely came from the employee's own technical contribution, developed independently of any specific employer project. Employers may still challenge this filing on grounds of wrongful obtainment, so expect pointed questions later about job duties, resources actually used, and any overlap with ongoing workplace projects, if the matter is ever contested.

Scenario C: Directors and senior managers

Senior managers and directors do owe fiduciary duties to the company. But fiduciary status, on its own, does not create a duty to invent for the company's benefit. Gharda illustrates this precisely: without a specific duty-to-invent clause or an executed assignment, courts will not assume employer ownership simply because of seniority, board membership, or ready access to company facilities. If you are in this position, preserve governance records, board minutes, and job descriptions carefully, since these are exactly the documents that will later show whether such a duty existed or not.

5. Deadlines and Paperwork That Often Decide the Outcome, Quietly

Two procedural details tend to decide these disputes far more often than the underlying philosophical question of entitlement.

The proof-of-right window. 

Where an assignee files, proof of right must be furnished with the application, or within the prescribed period, which typically allows up to six months from the Indian filing date, with a limited extension available in some circumstances. Missing this window can lead to objections, and in some cases outright refusal, purely for procedural non-compliance, entirely separate from the merits of who actually owns the invention. The safest practice, by a wide margin, is to obtain inventor signatures at the time of filing rather than chasing them down later.

Assignment formalities and stamping. 

Section 68 requires assignments to be in writing and duly executed. Under state stamp laws, assignments and many other IP instruments require proper stamping before they can be admitted in evidence in Indian proceedings. This is a detail that gets flagged constantly during funding or acquisition diligence, often at the worst possible moment, when a deal is otherwise ready to close. Teams should budget for state-specific stamp duty from the outset and ensure that signed originals are carefully maintained, not scanned copies alone. Registering the instrument in the Patent Office record helps avoid title disputes surfacing years later, when memories and personnel have both moved on.

6. What Happens If the Employer Objects After You Have Already Filed?

Indian law provides several adversarial pathways for exactly this situation, and it is worth knowing the shape of each before you are actually facing one.

Pre-grant opposition. 

Any person may oppose a published application before it is granted. Employers frequently use this route to argue wrongful obtainment, a lack of true entitlement on the applicant's part, or anticipation through disclosures that happened inside the workplace before filing.

Post-grant opposition and revocation. 

After grant, an interested person, which would certainly include a former employer with a genuine claim, may oppose within twelve months, or seek revocation before the High Court on grounds that include wrongful obtainment and the assertion that the patent was granted to a person not actually entitled to it. In appropriate cases, courts have gone as far as setting aside a grant entirely and directing correction of the register, so that title ultimately rests with whoever the law actually recognises as entitled.

Quick Reference: Statute and Case Law at a Glance

Founder and Employee Checklist Before You File

• Read the employment contract carefully for any invention or assignment clauses, including anything buried in an annexure or a separate confidentiality agreement.
• If the invention is assigned to the company by contract, file with the company as applicant, name the correct individual inventors, and lodge proof of right well within time.
• If unassigned, maintain a clean, contemporaneous paper trail, avoid using any employer confidential data, and be genuinely prepared to address a wrongful-obtainment challenge if one comes.
• Execute any assignments in writing, stamp them correctly under the relevant state law, and register them with the Patent Office promptly.
• Maintain originals of all signed documents, along with board minutes or HR records that describe roles and duties, since these often become the deciding evidence much later.

Addendum: Questions I Am Asked Most Often

Can I list myself as inventor while my company is the applicant? 

Yes, and this is usually the cleanest structure where an assignment genuinely exists. You remain named as inventor throughout, while ownership rests with the company through proof of right and compliance with Section 68. This approach avoids entitlement challenges later and generally simplifies prosecution considerably.

What if I built it at home, after hours, on my own laptop? 

Time and place help your narrative, but they are not decisive on their own. Indian courts look primarily at whether a contractual duty to invent existed, whether confidential information was used in developing the invention, and whether any assignment exists. If the contract is silent and no confidential material was taken, filing in your own name is genuinely possible. Keep contemporaneous records regardless, and avoid any overlap with ongoing employer projects during that period.

Should I bother registering the assignment with the Patent Office, or is the signed document enough? 

Yes, register it. While title technically passes on execution of a duly executed assignment, registration under Section 69 ensures the Patent Office record itself reflects the correct chain of title. This prevents disputes from surfacing later, makes licensing considerably easier, and smooths diligence during any future funding round or acquisition. Stamp duty under the relevant state law should be paid before registration is attempted.

Does it matter who paid the patent agent's fees or the official filing fees? 

No, not for ownership purposes. This comes up constantly, usually framed as "but I paid for the whole filing myself." Payment of expenses does not, on its own, prove ownership one way or the other. Ownership turns on the assignment and the proof of right actually filed with the Patent Office, not on whose card was charged for the invoice.

If my employer only finds out about my patent years later, is it too late for them to challenge it? 

Not necessarily. Post-grant opposition has a one-year window from the publication of the grant, but revocation before the High Court on grounds including wrongful obtainment is not bound by that same one-year limit in the same way. A long delay can affect the equities and the available remedies, but "years later" does not automatically mean the door is closed, which is precisely why maintaining a clean evidentiary record from day one matters even if no dispute ever seems imminent at the time.

Can my employer simply add a duty-to-invent clause retroactively, after I have already left? 

No. A contract term cannot generally be applied retroactively to invent an obligation that did not exist at the time the invention was actually conceived. Any attempt to do so would need to survive its own separate legal challenge, and courts, following the reasoning in cases like Gharda, are unlikely to look favourably on an after-the-fact attempt to manufacture an obligation that was never actually agreed.

To Conclude

In India, the right to file a patent begins with the true and first inventor, and it shifts to the company only where a genuine contract or an executed assignment says so. If the invention was created while you were an employee, and the contract does not assign it away, filing in your own name is legally possible, provided you have not misused confidential information and you can support your claim of entitlement with a proper evidentiary record. The safest course, for anyone in this position, is to align inventorship, ownership, and paperwork from the very first day of development, so that genuine innovation can be protected without an avoidable dispute deciding the outcome instead.

This advisory is for general informational purposes and reflects the author's understanding of the Indian Patents Act, 1970, the Patent Rules, and the cited judicial decisions. It is not a substitute for specific legal advice on your own employment contract or invention.