Views: 0
⚖️ Did You Know? A patent is a valuable business asset — it can be sold, licensed, pledged as security, or transferred as part of a business acquisition. Patent assignment in India is governed by the Patents Act, 1970, and requires formal registration with the Patent Office within 6 months of execution. Without registered assignment, the assignee has no legal standing to enforce the patent against infringers.
Table of Contents
- 1 Introduction
- 2 What Is Patent Assignment?
- 3 Types of Patent Assignment in India
- 4 Step-by-Step Patent Assignment Process in India
- 5 Documents Required for Patent Assignment
- 6 Government Fees for Patent Assignment (2026)
- 7 Stamp Duty on Patent Assignment
- 8 Can an Employer Claim Patent Assignment from an Employee?
- 9 Patent Assignment in a Merger or Acquisition
- 10 Assignment vs Licence: Choosing the Right Structure
- 11 Common Mistakes in Patent Assignment
- 12 Frequently Asked Questions
- 13 Need Help With Patent Assignment or IP Registration?
Introduction
When a patent is assigned, the original patent holder (assignor) transfers ownership of all or part of the patent rights to another person or entity (assignee). This transfer may happen as part of a business sale, a startup acquisition, a technology commercialisation deal, or a settlement between co-inventors.
Patent assignment in India is a formal legal process. The assignment must be in writing, signed by both parties, and recorded at the Indian Patent Office. An unregistered assignment is not enforceable against third parties and leaves the assignee without the right to sue infringers.
This guide covers everything businesses and patent holders need to know about patent assignment in India: the legal framework, types of assignment, the step-by-step process, required documents, government fees, timelines, and common mistakes to avoid.
What Is Patent Assignment?
Under Section 68 of the Patents Act, 1970, an assignment of a patent or a share in a patent must be in writing and signed by or on behalf of the parties to the transaction. Section 69 requires that the assignment be registered with the Controller of Patents.
Assignment is distinct from licensing. In a licence, the patent owner retains ownership and merely permits the licensee to use the patent. In an assignment, ownership itself is transferred. The assignee steps into the shoes of the original patent holder.
Types of Patent Assignment in India
1. Complete Assignment
All rights in the patent are transferred to the assignee, including the right to sue for infringement, the right to grant sub-licences, and the right to further assign. The assignor retains no rights in the patent.
2. Partial Assignment
Only some rights in the patent are transferred. For example, the assignor may transfer rights in a specific territory or for a specific field of use, while retaining rights elsewhere. Both parties then hold independent rights in their respective portions.
3. Assignment by Operation of Law
Patent rights may be transferred automatically under law — for example, on the death of the patent holder (to heirs or estate), on insolvency (to the official assignee), or on merger or amalgamation of a company (to the surviving entity). These transfers must still be recorded at the Patent Office.
Step-by-Step Patent Assignment Process in India
Step 1: Draft the assignment agreement. The agreement must be in writing, identify the patent by number and title, specify the consideration (payment), define the scope of rights being transferred (complete or partial, geographic scope, field of use), and be signed by both the assignor and assignee or their authorised representatives.
Step 2: Execute the agreement. Both parties sign the assignment deed. If either party is a company, the authorised signatory must execute the deed and affix the company seal (if applicable). For foreign parties, notarisation and apostille may be required.
Step 3: Prepare Form 16. Form 16 is the prescribed Patent Office form for recording a change in ownership (application for registration of assignment). It must be filed by the assignee.
Step 4: Pay the prescribed government fee. The fee depends on whether the assignee is a natural person/startup/small entity or a company/large entity.
Step 5: File at the Patent Office. The application (Form 16 + assignment agreement + fee) is filed at the jurisdictional branch of the Indian Patent Office (Mumbai, Chennai, Delhi, or Kolkata) or online through the IP India e-filing portal.
Step 6: Patent Office examination. The Controller of Patents examines the application to verify that the assignment agreement is properly executed and that the prescribed fees have been paid.
Step 7: Registration and update of patent register. On acceptance, the Patent Office records the assignee’s name as the new owner in the Register of Patents and issues a certificate of registration of title.
Timeline: Filing to registration typically takes 3 to 6 months, depending on Patent Office workload and whether any objections are raised.
Documents Required for Patent Assignment
- Patent assignment agreement (original or notarised copy)
- Form 16 — duly completed and signed
- Copy of patent grant certificate
- Identity proof of assignor and assignee (PAN / passport / incorporation certificate)
- Board resolution or power of attorney if signing on behalf of a company
- Proof of fee payment (challan or e-payment confirmation)
- Apostille / notarisation for foreign parties
- Deed of assignment if separate from the main agreement
Government Fees for Patent Assignment (2026)
| Service | Natural person / Startup / Small entity | Company / Large entity |
|---|---|---|
| Form 16 — registration of assignment | ₹1,600 | ₹8,000 |
| Each additional patent under same assignment | ₹800 | ₹4,000 |
| Certified copy of registered assignment | ₹200 per page | ₹200 per page |
In addition to the Patent Office fee, there are professional fees for drafting the assignment agreement (typically ₹10,000 to ₹30,000 depending on complexity) and stamp duty on the assignment deed, which varies by state and is calculated on the value of the consideration.
Stamp Duty on Patent Assignment
A patent assignment deed is an instrument transferring property and is therefore subject to stamp duty under the applicable state Stamp Act or the Indian Stamp Act. Stamp duty is calculated on the consideration value stated in the assignment agreement. Rates differ by state — in Maharashtra, for example, stamp duty on a transfer of intellectual property is charged as a percentage of the consideration or market value. Failure to adequately stamp the assignment deed makes it inadmissible as evidence in court.
Can an Employer Claim Patent Assignment from an Employee?
Under Section 17 of the Patents Act, if an invention is made by an employee in the course of their normal duties or specifically assigned duties, and the nature of those duties was such that the invention was expected to result, the employer is entitled to the patent. In such cases, the employment agreement typically requires the employee to execute an assignment in favour of the employer.
For inventions made outside the course of employment — using the employee’s own time and resources and not related to their employer’s business — the patent belongs to the employee, not the employer.
Every employment agreement in an IP-intensive business should contain a clear IP assignment clause covering inventions and work product created during employment.
Patent Assignment in a Merger or Acquisition
When a company is acquired, merged, or demerged, all patents registered in the name of the absorbed or transferring entity must be recorded in the name of the surviving or acquiring entity at the Patent Office. This requires filing Form 16 along with a certified copy of the merger/demerger order from the National Company Law Tribunal (NCLT).
This recording is not automatic — even after the NCLT order takes effect, the Patent Office records will continue to show the old entity’s name until a formal application is filed. An acquiring company that fails to update the patent register may face difficulty enforcing the patents or licensing them to third parties.
Assignment vs Licence: Choosing the Right Structure
| Factor | Assignment | Licence |
|---|---|---|
| Ownership transfer | Yes | No |
| Assignor retains rights | No (complete assignment) | Yes |
| Right to sue infringers | Assignee only | Usually licensor; exclusive licensee may also sue |
| Ongoing royalties | Optional | Typical |
| Reversibility | No (permanent) | Yes (on expiry or termination) |
| Patent Office registration | Mandatory | Advisable but not mandatory |
| Best for | Full exit, M&A, startup sale | Commercialisation while retaining ownership |
Common Mistakes in Patent Assignment
Failing to register. Many businesses execute an assignment agreement but never file Form 16 at the Patent Office. Under Section 69(2), an unregistered assignment is inadmissible as evidence of title in any proceeding to enforce patent rights.
Missing the 6-month window. Section 69(3) provides that if the assignment is not registered within 6 months of execution, the unregistered assignee cannot recover costs in any infringement action. File promptly after execution.
Inadequate assignment agreement. Assignments that do not clearly define the scope of rights (complete vs partial, territories, field of use) cause disputes between assignor and assignee. The agreement must be comprehensive and unambiguous.
Omitting related IP. A patent may be part of a family of related patents or pending applications. An assignment that transfers one patent but not related continuation or divisional applications may leave the assignee with incomplete protection.
No due diligence on encumbrances. A patent may be pledged as security (charged in favour of a lender) or subject to an existing licence. The assignee must conduct due diligence to identify any encumbrances before executing the assignment.
Insufficient stamp duty. An assignment deed that is not adequately stamped is inadmissible in evidence and may attract penalties. Stamp the document correctly in the state where it is executed.
Frequently Asked Questions
What is a patent assignment in India?
A patent assignment is the legal transfer of ownership rights in a patent from one party (the assignor) to another party (the assignee). Through an assignment, the assignee acquires all or part of the rights associated with the patent, including the right to use, license, sell, or enforce the patent.
What is the process for assigning a patent in India?
The patent assignment process begins with the execution of a written assignment agreement between the assignor and assignee. The agreement should clearly identify the patent, the parties involved, and the rights being transferred. After execution, the assignee must apply to record the assignment with the Indian Patent Office by filing the prescribed forms and supporting documents.
What documents are required for a patent assignment?
The key documents generally include the patent assignment deed or agreement, details of the patent being assigned, proof of ownership, identification documents of the parties, and the prescribed forms required by the Patent Office. In some cases, additional supporting documents or authorizations may be required, particularly when the assignment involves companies, foreign entities, or multiple patent owners.
Is it mandatory to register a patent assignment with the Patent Office?
While the assignment agreement may be valid between the parties upon execution, recording the assignment with the Indian Patent Office is highly advisable. Registration creates an official record of ownership and helps establish the assignee’s rights against third parties.
What is the cost of a patent assignment in India?
The cost of a patent assignment typically includes government filing fees, stamp duty on the assignment deed (which varies by state and transaction value), and professional fees charged by patent agents or legal professionals.
Need Help With Patent Assignment or IP Registration?
🟡 Quick Startup India provide complete patent registration, patent assignment drafting and filing, IP due diligence, and dispute resolution advisory for businesses and IP owners across all sectors in India.
IP Protection Services
👉 Patent Registration 👉 Trademark Registration 👉 Copyright Registration 👉 Design Registration
Business Registration and Compliance Services
👉 GST Registration and Filing 👉 Private Limited Company Registration 👉 LLP Registration 👉 MSME / Udyam Registration 👉 Startup India Registration
Call Now: +91 8595439395 Free Consultation: Monday to Saturday, 9 AM to 6 PM
Anjali is a Digital Marketing Expert at Quick Startup India who builds websites that rank and convert. She specializes in SEO-driven web development, helping people find the right legal help online.
