During my practice as a patent agent, I often come across queries like “I built this, so I own it, right?” or “But we filed it in the company’s name, so doesn’t that mean the company is the inventor?”

The mix-up is common and, honestly, understandable. Patents aren’t exactly written in everyday English. But here’s the catch: getting it wrong isn’t harmless. It can come back years later in the form of an opposition or even a revoked patent. The law in India actually spells it out quite clearly, but the differences between inventor, applicant, and assignee keep tripping people up. Let’s try to unpack this without the heavy jargon.

The Inventor - the human mind behind the idea

Section 2(1)(y) of the Indian Patents Act uses the phrase “true and first inventor”. In plain talk, that means the actual human being (not a company, not a lab, not a university) who came up with the invention. Only a natural person can be called the inventor.

Being an inventor, though, doesn’t make you the owner of the patent automatically. What it does give you is the right to be named in the application (Section 28). Think of it like writing a book, you’ll always be the author, but the publisher might control the rights depending on what you signed. Same with patents.

The Applicant - the one who files, not always the one who invented

Section 6 says the application can be filed by the inventor, the assignee, or a legal representative. So the person filing the patent isn’t always the inventor. If the applicant isn’t the inventor, they need a “proof of right” under Section 7(2).

In practice, this is usually an assignment deed or endorsement attached to Form 1. You have six months to submit it (with a one-month extension possible). Miss this step, and your application is shaky. Universities and startups often forget this: students invent something, the institution rushes to file in its name, but forgets the paperwork. Months later, they’re scrambling.

The Assignee - the legal owner after transfer

An assignee (Section 2(1)(ab)) is anyone who has received rights from the inventor. Could be an individual, could be a company. Assignments must be written (Section 68) and registered with the Controller (Section 69).

Skip registration, and your deed might not even be accepted in court. Imagine building a business around a patent and then losing enforcement rights because you didn’t file a simple form. Yes, it happens.

The Patentee - the final name on the register

When the patent is finally granted, the person or entity listed on the patent register becomes the patentee. That’s the person who can sue, license, or stop others from using the invention. By then, the inventor’s name is just a credit; the patentee holds the actual power.

Why all this matters: some real cases

Take the Gharda Chemicals case. Here, patents were filed in the name of the Managing Director. The company later argued the patents belonged to them since the MD invented them while employed there. The court didn’t agree - no assignment, no rights.

In the NTT DoCoMo case, the Japanese telecom filed in India but didn’t file proper proof of right. The Controller refused. IPAB upheld it. A paperwork miss, and the whole filing fell apart.

Then there’s Dow Agrosciences, where IPAB allowed a PCT declaration to stand in as proof of right. That eased things for big companies, but the core rule stayed the same: no proof of right, no valid claim.

And the Dr. Aloys Wobben v. Yogesh Mehra (Supreme Court) decision- only the registered patentee can enforce rights. If your name isn’t on the register, forget enforcement.

Where people usually go wrong

Startups: two founders invent together, but the company files the patent. Unless both inventors assign their rights to the company, legally the inventors still own it. That can blow up later in investor due diligence.

Universities: students invent under a professor’s guidance. The university files the patent in its name, assuming ownership. Unless the student signed an assignment, the rights are still with the student.

Employees: unless your contract clearly says inventions made during employment belong to the company, the default rule is that the employee owns them. That’s why employment contracts often have those “hereby assign” clauses.

Collaborations: multiple institutions working together often avoid the hard talk about who will own the patent. Without assignments, it becomes a mess later.

Opposition and revocation risks

Sections 25 and 64 allow challenges if patents are filed wrongfully. If you file as an applicant without being the inventor or without assignment rights, the true inventor can oppose it. And trust me, people do. Losing a patent at this stage after years of work can be devastating.

FAQs

1. If I built the invention, doesn’t that automatically make me the owner?

Not necessarily. Under Indian law, you may be the “true and first inventor,” meaning the person who conceived the invention. However, ownership of the patent is a separate legal question.

If you developed the invention during employment or under a contractual arrangement, your rights may already be assigned to your employer. Inventorship and ownership are distinct concepts. Being the creative mind behind the invention does not always mean you hold the enforceable legal rights.

2. Can a company be listed as the inventor of a patent?

No. Only a natural person can be named as an inventor under the Patents Act, 1970. A company, university, or institution may file as an applicant and eventually become the patentee, but it cannot be the inventor.

The inventor must always be an individual human being who contributed intellectually to the inventive concept. Listing a company as the inventor would be legally incorrect.

3. What exactly is the difference between an inventor and an applicant?

The inventor is the person who conceived the invention. The applicant is the person or entity that files the patent application. These roles can overlap, but they often do not.

For example, an employee may be the inventor, while the employer files the patent application as the applicant. In such cases, the applicant must demonstrate entitlement to file, typically through an assignment or contractual provision.

4. What is “proof of right,” and why is it so important?

If the applicant is not the inventor, Indian law requires proof that the applicant is entitled to apply. This is mandated under Section 7(2). The proof usually takes the form of an assignment deed or a declaration confirming transfer of rights.

This document must be filed within the prescribed timeline. Failure to submit proof of right can result in refusal of the application. Several cases have demonstrated that even large corporations have faced rejection due to incomplete documentation.

5. What is an assignee, and how does assignment work?

An assignee is a person or entity that has received rights from the inventor. The assignment must be in writing, as required by Section 68, and should be registered with the Controller under Section 69.

If the assignment is not properly recorded, enforcement can become problematic. A patent may be commercially exploited for years, but if ownership is unclear or unregistered, its enforceability may be questioned in court.

6. Who is the patentee, and why does that matter?

The patentee is the person or entity whose name appears on the patent register after grant. This is the party that holds the enforceable rights, the ability to license, assign, or initiate infringement proceedings.

If your name does not appear as the patentee, you cannot independently enforce the patent. Even an inventor cannot sue for infringement unless they are also the registered patentee or have retained ownership rights.

7. What commonly goes wrong in startups and universities?

In startups, co-founders may jointly invent something but file in the company’s name without executing formal assignments. During investor due diligence, the absence of signed assignments becomes a serious red flag.

In universities, institutions may assume ownership over student inventions without securing proper assignment agreements. If documentation is incomplete, the student may still legally retain rights, leading to disputes.

8. What happens if inventorship or ownership is recorded incorrectly?

Incorrect inventorship or lack of entitlement can become grounds for opposition under Section 25 or revocation under Section 64. If a patent is found to have been wrongfully obtained, it may be revoked even after grant.

These challenges can arise years later, often during enforcement or licensing negotiations. At that stage, correcting structural ownership defects may not be straightforward.

9. Does an employment contract automatically transfer patent rights to the employer?

Not automatically, unless the contract clearly contains assignment clauses. Many employment agreements include language stating that inventions developed during employment are assigned to the company.

If such clauses are absent or poorly drafted, ownership may remain with the employee, even if the work was performed using company resources. Contract clarity is essential.

10. Why do courts take ownership documentation so seriously?

Because patents are property rights. Just as land ownership must be clearly documented, patent ownership must be legally traceable. Courts rely heavily on formal documentation — assignment deeds, registration records, and declarations.

Without clear documentation, enforcement becomes uncertain. A technically strong patent can fail in litigation if entitlement is not properly established.

11. What is the safest approach to avoid disputes later?

Address inventorship and ownership at the earliest stage. Identify who conceived the invention. Determine who will file as applicant. Execute written assignments where necessary. File proof of right within statutory deadlines. Register assignments promptly.

These steps may seem administrative, but they protect the structural integrity of your patent. A patent’s strength is not only in its technical claims, but also in the clarity of its ownership chain.

The bottom line

The inventor is always the human brain behind the idea. The applicant is the one who files, and the assignee is the one who owns after rights are transferred. The patentee is the final legal holder. Mix them up and you risk your patent collapsing.

For students, entrepreneurs, and professors, the lesson is simple: don’t assume “inventor = owner”. The law doesn’t work that way. Get the paperwork right early: assignments, proof of right, registration. It’s boring, yes, but it’s what keeps your invention safe and enforceable.