Section 154 of the Patents Act, 1970
Loss or destruction of patents
Section 154 allows the Controller to issue a duplicate patent where the original has been lost or destroyed or cannot be produced.
Official legal text
The verbatim statutory text of this provision is reproduced from the official source and checked by our legal reviewer before it is published here. Until that check is complete for this page, read the exact wording directly from the official source linked below — it is the only version that governs.
This explanation is written for clarity, not for citation. The official statutory text and any Gazette notification in force on your date govern, and they prevail over anything said here.
What this section says, in plain language
A granted patent is issued as a formal document. Businesses need it for board records, for security and financing documents, for customs recordals, for tenders that ask for proof of proprietary technology, and sometimes simply to satisfy a counterparty's checklist. Documents get lost. Offices flood, files are misplaced in a merger, a founder's cupboard is cleared out. Section 154 provides the remedy.
The section says that if a patent is lost or destroyed, or if its non-production is otherwise accounted for to the satisfaction of the Controller, the Controller may at any time cause a duplicate to be sealed, on an application made in the prescribed manner and on payment of the prescribed fee. Rule 132 prescribes the manner of applying. The application has to explain what happened, and the Controller has to be satisfied with that explanation, so a bare assertion that the document cannot be found is usually supported by an affidavit setting out the circumstances of the loss or destruction and the searches made.
The phrase to notice is otherwise accounted for. The section is not limited to physical loss. If the original cannot be produced for some other credible reason, for example because it is held by a party who will not release it or was destroyed in a fire along with other records, the Controller can still act once satisfied. The discretion is the Controller's and is exercised on the material placed before the office.
A duplicate does not create a new patent or a new term. The rights, the claims, the date of the patent and the expiry date all stay exactly as they were. What is replaced is the evidentiary document. The legal source of truth about who owns the patent and whether it is in force remains the register of patents under Section 67, which is why Section 147 makes certified copies of register entries admissible without further proof. In many situations a certified copy of the register entry and of the granted specification will serve the purpose perfectly well and is quicker to obtain than a duplicate.
Losing the paper patent does not affect renewals either. Renewal fees under Section 53 continue to fall due on their own schedule, and a patent lapses for non-payment regardless of whether the certificate is in a safe or at the bottom of a river.
Why this section matters
Patentees whose original patent document has been lost or destroyed, and companies rebuilding records after a fire, a flood, a relocation, a merger or a founder dispute.
Any time during or after the life of the patent when the original document is needed and cannot be produced.
A power in the Controller, on application and payment of the prescribed fee, to seal and issue a duplicate patent.
Transactions stall for want of a document, or a party wastes time when a certified register extract would have answered the need immediately.
How it works in practice
Rebuilding records after a warehouse fire
Chenab Hydraulics Pvt Ltd of Jammu kept its original patent documents, along with older accounts, in a records room adjoining its warehouse. A fire destroyed the room. Two years later the company was negotiating a loan where the lender wanted the patent offered as collateral, and the lender's counsel asked to see the patent document. The company applied under Section 154 in the manner prescribed by Rule 132, explaining the fire and enclosing an affidavit from its company secretary along with the fire brigade report and a list of records lost. The Controller was satisfied and caused a duplicate to be sealed. In parallel, and on the same day it applied, the company obtained a certified copy of the register entry showing it as recorded proprietor and showing renewal fees paid to date. The certified extract in fact satisfied the lender's immediate requirement, and the duplicate arrived later for the company's permanent records. Two routes, one problem, and knowing both saved several weeks.
Simplified illustration only. Actual legal outcomes depend on the facts.
Key points to remember
- The Controller may seal a duplicate patent where the original is lost or destroyed, or its non-production is otherwise explained.
- An application in the manner prescribed by Rule 132 and the prescribed fee are required.
- The Controller must be satisfied about the loss, so an affidavit explaining the circumstances is usually needed.
- A duplicate replaces the document only; it does not change the claims, the date of patent, the term or the ownership.
- The register under Section 67 remains the authoritative record of ownership and subsistence.
- A certified copy of the register entry under Rule 133 is often faster and enough for a lender, buyer or court.
- Renewal obligations under Section 53 continue regardless of whether the original document exists.
Common mistakes and misunderstandings
- Believing the paper patent is the right itself. The right comes from the grant and is recorded in the register; the document is evidence of it.
- Assuming a duplicate restores a lapsed patent. If renewal fees were not paid, restoration under Section 60 is the relevant route, not this section.
- Applying for a duplicate when a certified copy of the register entry and the specification would have satisfied the counterparty in a fraction of the time.
- Filing a bare request without explaining how the original was lost. The Controller has to be satisfied before exercising the power.
Connected provisions
The Patents Act sets the requirement; the Patents Rules, 2003 set the procedure that carries it out. Parliament passes the Act and the Central Government makes the Rules, so the two are separate instruments. We list the connected rules here to take you from the principle to the paperwork.
Forms, deadlines and fees
Where a fee is payable under this provision, the figure comes from the First Schedule. Categories of applicant are charged at different rates, and electronic filing is treated differently from paper filing, so an accurate number can only come from the Schedule in force on the day you file. How Indian patent fees work.
Related judgments
Case law is added slowly and deliberately. A summary is drafted, checked against the reported judgment and then reviewed before publication, because a wrong case note can mislead a reader badly. No summary for this provision has reached publication yet. How case notes are prepared.
Questions people ask about Section 154
I lost my original Indian patent certificate. What do I do?
Apply to the Controller for a duplicate under Section 154, in the manner prescribed by Rule 132 and with the prescribed fee. Explain how the original was lost or destroyed and support that with an affidavit, because the Controller has to be satisfied before issuing a duplicate. In the meantime, obtain a certified copy of the register entry and of the granted specification under Rule 133, which Section 147 makes admissible without further proof. For most commercial purposes that certified extract does the job.
Does losing the patent document affect my patent rights?
No. Your rights come from the grant of the patent and are recorded in the register of patents under Section 67. The document is evidence of the grant, not the source of the right. You can still sue for infringement, licence the patent and assign it without holding the original, provided the register shows the position correctly. What losing the document does affect is convenience, because counterparties, lenders and some authorities ask to see a formal document as part of their process.
Is a duplicate patent the same as a certified copy?
No. A duplicate patent is a fresh sealed patent document issued by the Controller under Section 154 to replace one that is lost or destroyed. A certified copy is a copy of a document or register entry held at the Patent Office, certified and sealed, and issued under Rule 133. The certified copy is usually quicker to obtain and, because Section 147 makes it admissible in court without further proof, it is what litigators and transaction lawyers normally want.
Can I get a duplicate for a patent that has already expired?
The section allows the Controller to act at any time, and an expired patent can still matter, for example in a dispute about acts committed while the patent was in force or in a historical record for an audit. Whether a duplicate is the right tool is a different question, since a certified copy of the register entry and the specification usually meets the need. Explain your actual purpose in the application, because that helps the Controller decide what is appropriate.
Lost your patent document before a deal or a loan?
MYCrave Consultancy files duplicate patent applications and obtains certified register extracts so your transaction is not held up.
You will be speaking with MYCrave Consultancy & Services, the firm that operates this platform. General questions are answered free; matter‑specific work is quoted before anything is done.