Manual 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.
Three grounds that appear in almost every first examination report are covered in short paragraphs of Chapter 9: industrial applicability (09.03.04), sufficiency of disclosure (09.03.07) and unity of invention (09.03.08). Each is a check the examiner makes alongside novelty and inventive step.
The specification must show a specific utility, not just say the invention is useful. The examiner checks eight points on sufficiency, from the title to the deposit of biological material. The claims must relate to a single inventive concept; independent claims in different categories may be allowed together if they are linked. The Manual is the Patent Office's guidance and does not have the force of law; the Patents Act, 1970 and the Patents Rules, 2003 as now in force prevail.
Check the current Manual on ipindia.gov.in. For the statute, see section 10: contents of specifications, title and description and sections 16 and 17. If you have received an objection on any of these grounds, our patent objection reply service can help.
Industrial applicability (09.03.04)
The Manual says an invention must be capable of industrial application, which means it can be made or used in an industry. The examiner assesses whether the claimed invention is capable of use in any industry or of being made by an industrial process. Usually the specification makes this self-evident. Where it does not, the Manual says a mere suggestion that the matter would be industrially applicable is not enough: a specific utility, supported by the disclosure, must be indicated. A compound said to be useful in treating unspecified disorders, or to have useful biological properties, does not show a specific utility.
| What the examiner asks | What the applicant shows |
|---|---|
| Can it be made or used in an industry? | A statement of the industry and the use, in the specification |
| Is the utility specific? | The disorder, process or product the invention serves, with support in the disclosure |
| Is the statement only an assertion? | Data or a worked embodiment in the specification as filed |
The reply is to point to the specification passages that state the specific use. Where there are none, the Manual's approach leaves the applicant with an amendment problem: new matter cannot be introduced outside the Act and Rules.
Sufficiency of disclosure (09.03.07)
The Manual says sufficiency of disclosure is checked by the examiner on these points:
- the specification is properly titled;
- the subject matter is fully and particularly described;
- the claims define the scope of the invention properly;
- the specification describes the method of performing the invention that the applicant considers most suitable (section 10(4)(b));
- the source and geographical origin of biological material are disclosed, where the invention relates to or uses such material;
- approval of the National Biodiversity Authority has been obtained wherever applicable;
- where a biological material that is not publicly available is mentioned and cannot be described, the application is completed by depositing it with an international depository authority under the Budapest Treaty; and
- the accession number and date of deposit, with the name and address of the depository, are given, if applicable.
| Objection | Typical reply |
|---|---|
| Description does not enable the skilled person | Point to the passages and examples that do; add nothing outside the Act and Rules |
| Claim wider than the disclosure | Narrow the claim to what is disclosed |
| Method of performing the invention not disclosed | Show the passage disclosing the preferred method, or amend the description within the Act and Rules |
| Source and origin of biological material not stated | File the statement, supported by records |
| NBA approval not on file | File the approval before grant, or show it is not applicable |
| Deposit details missing | File the accession number, date and depository details |
Our article on the complete specification part by part covers what a specification should contain from the start, including the deposit and origin statements. The TK and Biological Material Guidelines describe the screening for such cases; see TK Guidelines 2012: screening and NBA permission. Because the Biological Diversity Act, 2002 has been amended since the Manual, check the Act as now in force on the NBA approval requirement.
Unity of invention (09.03.08)
The Manual states that the claims of a specification must relate to a single inventive concept. If the application has several, the examiner refers to this in the report, and the application may be divided to meet the objection. Four propositions guide the examiner:
- whether a group of inventions forms a single inventive concept is decided without regard to whether they are claimed in separate claims or as alternatives within one claim;
- unity between a process and an apparatus requires that the apparatus be specifically designed to carry out the process;
- independent claims of different categories may be allowed together if linked to one inventive concept and supported by the description; and
- illustrative groupings the Manual gives include a product with a process specially adapted to make it, a process with apparatus designed for it, a plug and socket, a transmitter and receiver, and, for biotechnology, a sequence with a method of expressing it, an antibody and a kit; and for a drug, the product, the process and a composition containing it.
| Examiner's question | Reply |
|---|---|
| Are the claims linked by one concept? | Show the shared inventive feature across the claim categories |
| Is the apparatus specifically designed for the process? | Show the structural features that tie it to the process |
| Is each category supported by the description? | Point to the supporting passages |
| If unity is lacking | Elect one group and file a divisional; see our article on divisional applications |
For how claims are written, see claims: unity, clarity, scope and structure.
Worked example
Rao Bio-Fermenters Pvt Ltd claims a fermentation process, an apparatus and a reactor lining. The examiner objects on unity of invention: the lining is not specifically designed for the process. The agent shows that the process and the apparatus share the same inventive feature (a gas distribution arrangement) and elects them; the lining claims are removed to a divisional application. The same report also objects that the specification says only that the process is "useful in industry". The agent points to the passage that identifies the specific product, and the objection is closed.
Need help answering these objections?
Industrial applicability, sufficiency and unity are usually answered by pointing to the application as filed. Our patent objection reply team prepares the reply and, where needed, the divisional strategy.
Key takeaways
- A specific utility, supported by the disclosure, must be indicated; a general statement of usefulness is not enough.
- Sufficiency covers the title, full description, claim scope, the preferred method, biological material source, NBA approval and deposit.
- Claims must relate to a single inventive concept; linked claims of different categories may be allowed together.
- If unity is lacking, the application may be divided.
- The Act and Rules as now in force prevail over the Manual.
Read next
- Chapter 5: claims, unity and clarity
- Chapter 6: divisional applications and patents of addition
- Chapter 9: inventive step
- Patent specification: complete draft template
Disclaimer: Based on the manuals and guidelines published by the Office of the Controller General of Patents, Designs and Trade Marks that are named in the article, as consulted on 4 October 2026. They are guidance and do not have the force of law; the Patents Act, 1970 and the Patents Rules, 2003 as amended (including the 2024 amendment rules) prevail, and the current versions on ipindia.gov.in should be checked. This article is general information, not legal advice; check the official text before acting.