In one recent filing, an Indian startup sent patent correspondence through its overseas counsel without submitting a formal authorisation. The Controller flagged the omission and withheld further processing. Such procedural slips often stem from misunderstanding Form 26 - the formal authorization under Indian patent law. Understanding this document is essential for applicants, agents, and in-house counsel alike.
Below is a detailed guide on Form 26 - what it is, why and when it must be filed, how to draft it, its legal effects, revocation, pitfalls, and strategic tips.
Statutory & Rule Basis
Sections 127 and 132 of the Patents Act empower parties to authorise agents or representatives to act in proceedings.
Rule 135 of the Patents Rules, 2003 mandates that such authorisation be filed in Form 26 or by a power of attorney within a prescribed timeframe.
Rule 135(1) states:
“The authorisation of an agent for the purposes of the Act and these rules shall be filed in Form 26 or in the form of a power of attorney within a period of three months from the date of filing of such application or document, failing which no action shall be taken … till such deficiency is removed.”Rule 135(2) provides that once authorisation is valid, service upon the agent is deemed service upon the principal, and appearances before the Controller may be made via the authorised agent.
However, Rule 135(3) reserves the Controller’s right to require personal signature or presence despite the authorisation.
Thus, Form 26 is not optional when you wish someone else (a patent agent or any representative) to act on your behalf in a patent matter - but must be timely filed and properly drafted.
Purpose & Scope of Form 26
Form 26 serves as a power of attorney / authorization under the Patents Act, enabling:
A registered patent agent (or any person, if so authorised) to act on behalf of the applicant or party in all proceedings under the Act.
The agent to: file patent applications, respond to office actions, represent at hearings, sign petitions, appeals, amendments, revival requests, oppositions, renewals, assignments, etc.
Communications, notices, requisitions to be directed to the agent (at the address given) in lieu of the principal.
Revocation of earlier authorisations (if any) by the same principal for the same matter.
Thus, Form 26 creates a legally recognised channel of representation between the party and the Patent Office or Controller.
When to File (Time Limits) & Consequences of Delay
The applicant (or party) must file Form 26 (or equivalent POA) within three months of filing the relevant application or document.
If Form 26 is not filed within that timeframe, no further action will be taken on that application or document until the deficiency is cured.
In practice, when filing a patent application (Form 1), most applicants submit Form 26 simultaneously (especially if they use a patent agent).
If there is a change of agent later (substitution), a fresh Form 26 (or corresponding authorisation) must be filed to record the change.
The Controller may at any time require personal signature or appearance notwithstanding the authorisation, especially in contentious or exceptional cases.
In other words, though the window is forgiving (3 months), delays or omission can stall processing, making it critical not to overlook this form.
Drafting & Contents of Form 26
You can download the standard template from the IPO website. The key components are:
Principal (“I / We”)
Name(s), address, nationality of the person(s) authorising the agent.
Authorized Agent(s)
Name(s), address(es), nationality(ies) of the patent agent or person being authorised.
Particular matter / proceeding
Specify the patent application (number, title) or matter in respect of which the authorisation is given.
If a general authority is intended, it may cover “all matters pertaining to patent application / proceedings” etc.
Communication address
A clause requesting that all notices, requisitions, communications be addressed to the authorised agent at the address given (unless otherwise specified).
Revocation clause
A standard clause revoking all prior authorisations (if any) in respect of the same matter.
Assent to prior acts
A clause stating that the principal “assents to the action already taken by the said person in the above matter.”
Date, signature, name, designation, seal
The signature of the person(s) making the authorisation
Name and designation (if signing on behalf of a company)
Official seal or stamp (if applicable)
The recipient: “To The Controller of Patents, The Patent Office at …”
Stamping / stamp duty
The form must bear stamp duty as per the Indian Stamp Act (as applicable in the relevant state) if required.
When drafting, ensure that names, addresses, nationality, application numbers and titles are accurate and consistent with other filings to prevent mismatch objections.
Legal Effects & Practical Consequences
Once validly filed, service on the agent is service on the principal; the Controller may send all notices etc. to the agent.
Appearances and submissions before the Controller may be made by or through the agent as authorised in Form 26.
The agent can sign documents, respond to objections, file appeals, amendments, oppositions, renewals, etc., in the scope defined.
If the agent changes, unless a fresh Form 26 is filed, their ability to act may be questioned or ignored.
However:
The Controller retains power, in special or sensitive cases, to insist on personal signature or appearance even if the agent is authorised.
The authorisation is only as broad as the language in the Form; overbroad or ambiguous language may lead to challenges or refusal of recognition for certain acts.
Thus, precision in drafting the scope and clarity are vital.
Revocation & Substitution
The principal may revoke the authorisation at any time (subject to notice). A revocation should preferably be communicated in writing (e.g. by a fresh Form 26 or revocation notice).
A new Form 26 may be filed to substitute a fresh agent, specifying that prior authorisations for the same matter are revoked.
Even after revocation, acts already taken by the authorised agent (before revocation) are typically assented to in the original Form 26 (“assent to prior acts” clause).
The revocation must also be communicated to the Controller (so that future notices are not sent to the old agent).
In short, do not neglect updating or revoking Form 26 when representation changes.
Common Pitfalls & Best Practices
Pitfall | Consequence / Risk | Best Practice |
Missing or delayed filing beyond 3 months | Controller will not process documents until deficiency is cured | File Form 26 along with the initial filing |
Mismatch in names, addresses, application numbers | Objections or refusal by Controller on technical grounds | Cross-verify details across all related documents |
Overbroad vague language | Agent’s authority may be challenged (e.g. for appeals) | Use clear, precise wording (e.g. “all matters relating to application No. X”) |
Forgetting to revoke earlier authorisations | Ambiguity or conflict of representation | Include revocation clause and clearly state no prior authorisations apply |
Lack of stamp duty where required | Question over validity under state law | Apply appropriate stamp duty per state Stamp Act |
Change of agent without fresh Form 26 | Unauthorized acts may be ignored | Always file substitution form promptly |
Relying only on the agent’s unlimited power | Over-reliance may lead to imprudent action | Review agent’s actions and maintain oversight |
Best practice is to maintain a master General Power of Attorney (GPOA) for recurring matters while still filing project-specific Form 26s for clarity and audit trails. Many applicants use both in tandem, ensuring that every matter has a tailored authorisation.
When Form 26 Is Not Needed or Optional
If the applicant is acting in person (i.e. not via agent), no Form 26 is required for that matter.
In rare cases, the Controller may accept informal authorisations or signatures, but formal Form 26 (or POA) is the default and safe route.
Form 26 is for matters under the Patents Act. For rights under other IP statutes (trademarks, designs), separate authorisations apply.
