Rules 5 explained: this guide covers what it means, who it applies to, the step-by-step process, documents required, fees, due dates and penalties in India — so you can stay compliant with confidence and avoid costly mistakes.
Rule 5 requires everyone involved in a patent proceeding, and every patentee, to give the Controller an address for service in India that includes a postal address and an e-mail address. Rule 6 then lays down how documents are filed with the Patent Office and sent from it, when they are treated as delivered, and when late receipt can be forgiven.
Without an address for service, the Controller is under no obligation to proceed or send notices (rule 5). A patent agent must also give a mobile number registered in India, and under rule 6(1A) must file all documents only by electronic transmission, with any original asked for to be submitted within fifteen days. Communications are dated from dispatch, and delay in receipt can be condoned only within the limits of rule 6(5) and (6).
Rule 5: address for service
Every person concerned in any proceeding to which the Act or the Rules relate, and every patentee, shall furnish to the Controller an address for service. That address must include a postal address in India and an e-mail address. The address for service is then treated for all purposes connected with the proceeding or patent as the address of the person concerned or of the patentee.
The consequence of not giving one is stated plainly: unless an address for service is given, the Controller is under no obligation either to proceed or deal with any proceeding or patent, or to send any notice required under the Act or the Rules, and the Controller may take a suo motu decision in the matter. A proviso adds that a patent agent shall also furnish to the Controller a mobile number registered in India.
Several points follow.
- Who must give it. Applicants, opponents, other parties and patentees. The rule says "every person concerned in any proceedings", so an opponent or a person seeking a hearing is covered.
- What it must contain. A postal address in India and an e-mail address. The postal address must be one in India.
- What it does. It is treated for all purposes connected with the proceeding or patent as the address of the person concerned.
- What happens without it. The Controller need not proceed. The risk lies with the applicant.
Our article on rules 3 and 4 shows that, for an applicant with no place of business or domicile in India, the address for service in India also fixes the appropriate office. If you plan a filing, our patent drafting and filing service can set up the address for service and the agent details before the first document is filed.
Rule 6: leaving and serving documents
Sub-rule (1): how documents are filed
An application, notice or other document authorised or required to be filed, left, made or given at the patent office, or to the Controller or any other person, may be tendered by hand, or sent by letter addressed to the Controller at the appropriate office (or to the other person) through post, registered post, speed post, or electronic transmission duly authenticated. If sent by post or electronically, it is deemed to have been filed, left, made or given when the mail would have been delivered in the ordinary course of that mode. To prove sending, it is enough to show that the mail was properly addressed and transmitted.
Sub-rule (1A): patent agents file electronically
Notwithstanding sub-rule (1), a patent agent shall file, leave, make or give all documents only by electronic transmission duly authenticated. A proviso says that any document asked to be submitted in original shall be submitted within fifteen days, failing which it is deemed not to have been filed. See our guide on patent agents for who may act.
Sub-rules (2) to (4): communications from the office
- Sub-rule (2). A written communication addressed to a patentee at the postal or e-mail address on the register of patents, or at the address for service under rule 5, or to an applicant or opponent at the postal or e-mail address on the application or notice of opposition or given for service, is deemed properly addressed.
- Sub-rule (3). All notices and written communications to a patentee, applicant or opponent, and documents forwarded to them, shall, except when sent by special messenger, be sent by registered post, speed post or electronic transmission duly authenticated.
- Sub-rule (4). The date of a notice or communication is the date of dispatch by registered post, speed post, fax or electronic transmission duly authenticated, as the case may be, unless the Act or Rules specify otherwise.
The date of dispatch, not the date of receipt, is therefore the date of the notice. A party counting a period from a notice should count from dispatch unless a specific rule says otherwise.
| Mode | Treated as | Rule |
|---|---|---|
| By hand | Filed when tendered | 6(1) |
| Post, registered, speed post or electronic transmission | Filed when the mail would ordinarily have been delivered | 6(1) |
| Patent agent's filings | Electronic transmission only; originals within 15 days if asked | 6(1A) |
| Notice from the office | Dated on the day of dispatch | 6(4) |
Sub-rule (5): delay in receipt
If a document or communication sent by the patent office reaches a party late, the Controller may condone the delay in transmitting or resubmitting a document, or in doing any act by the party. The petition must be made immediately after the receipt of the document, with a statement of the circumstances and evidence in support. The proviso limits the condonation: it cannot exceed the period between the date on which the party was supposed to have received the document in the ordinary course of mail or electronic transmission and the actual date of receipt.
Sub-rule (6): disruption of communications
Without prejudice to sub-rule (5), and notwithstanding sub-rule (2) of rule 138, the Controller may condone delay in transmitting or resubmitting a document, or performing an act, on a petition with a statement and evidence showing to the Controller's satisfaction that the delay was due to war, revolution, civil disorder, strike, natural calamity, a general unavailability of electronic communication services or other like reason in the locality of the party, that the situation was severe enough to disrupt normal communication in that area, and that the action was taken as soon as reasonably possible and not later than one month from the date the situation ceased. The proviso caps the condonation at the period for which the national emergency was in force, or six months from the expiry of the prescribed period, whichever is earlier.
A cross-reference to note. Rule 6(6) refers to "sub-rule (2) of rule 138". Rule 138 was substituted by the Patents (Amendment) Rules, 2024 with a single-paragraph rule on extending time up to six months on Form 4, and it has no sub-rule (2). The text of rule 6(6) was not changed in the sources, so read the reference with that in mind.
Sub-rule (7): burden of proof
Any liability or burden of proof regarding the authenticity of a document filed, left, made or given under the Rules, including an electronically transmitted document, lies only with the party filing, leaving, making or giving it.
A worked example
Rhea Biotech, an Indian applicant, appoints a registered patent agent. The agent files a response electronically on a Friday and the Patent Office asks for the signed original. Under rule 6(1A) the original must reach the Patent Office within fifteen days; otherwise the document is deemed not to have been filed. In another matter a hearing notice is dispatched by e-mail on 3rd of the month to Rhea's address for service. Under rule 6(4) the notice is dated 3rd, even if the mailbox is opened later. If the notice was in fact delayed and Rhea acts late, rule 6(5) lets her petition immediately after receipt, and the Controller may condone only up to the gap between ordinary-course receipt and actual receipt.
Link to the Act
Rule 6 works alongside section 149 of the Patents Act on service by post. See our article on sections 147-149 of the Patents Act, 1970.
Need help with filings and notices?
Missed notices and late originals are among the most avoidable problems in patent practice. If you would like us to maintain your address for service and manage electronic filings, you can speak to us about patent drafting and filing.
Key takeaways
- Rule 5 requires a postal address in India and an e-mail address as the address for service; a patent agent must also give an Indian mobile number.
- Without an address for service the Controller need not proceed or send notices.
- A patent agent files only by electronic transmission; originals asked for must come within fifteen days (rule 6(1A)).
- A communication from the office is dated on dispatch (rule 6(4)).
- Condonation of delay in receipt is limited by sub-rules (5) and (6).
- The burden of proving authenticity lies on the filer (rule 6(7)).
- Amendments after the Second Amendment Rules, 2024 should be checked.
Read next
- Rules 3 and 4: prescribed particulars and appropriate office
- Rule 7: fees, mode of payment and refund
- Patent agents: who can practice and registration
- Patent registration process in India
Disclaimer: Based on the Patents Rules, 2003 as consolidated up to 21 September 2021 and as amended by the Patents (Amendment) Rules, 2024 and the Patents (Second Amendment) Rules, 2024, as consulted on 2 October 2026. Later amendment rules, forms and fees should be checked in their current form. This article is general information, not legal advice; check the official text before acting.