How the 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.
Claims decide what a patent protects. Paragraphs 05.03.13 to 05.03.17 of the Manual set out what the Office expects of them: a single inventive concept, clear and succinct wording, a sensible breadth and a recognisable structure. Many first examination report objections come from one of these points, so claims are where patent drafting and filing effort pays back.
Claims must relate to a single invention or a group linked by a single inventive concept, be clear, succinct and fairly based on the specification, and be neither too broad nor too narrow. Whatever is not claimed is treated as disclaimed. Each claim is a single sentence; the first is an independent principal claim; dependent claims must be fully limited by the independent claim; and an omnibus claim is not allowed. 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. The statutory basis is section 10(4)(c) and 10(5), covered in our post on section 10: claims, abstract and biological material. For the drafting side, see our claims drafting template.
Why claims matter (05.03.13 and 05.03.15)
The Manual calls claims the most critical part of the application: they define the contours of the rights if a patent is granted. A claim is "a statement of technical facts expressed in legal terms" (05.03.15(a)), and no exclusivity is obtained for matter that is described but not claimed; what is not claimed, including amended claims, stands disclaimed and is open to public use. Claims form a "protective fence around the invention" (05.03.15(b)), and must define the scope with conciseness, precision and accuracy so that others know the boundary.
Each claim is evaluated on its own merit. An objection to one claim does not mean the others are invalid, which is why the Manual encourages claims on all aspects of the invention.
Unity of invention and clarity (05.03.14)
The claims of a complete specification relate to a single invention, or to a group of inventions linked so as to form a single inventive concept. They must be clear and succinct, and fairly based on the matter disclosed. A plan for an application with several inventions should be made before filing; if unity is lacking, the Office raises an objection and the remedy is usually a divisional application. See our article on divisional applications for what the Office does then.
Scope (05.03.16)
The Manual warns in both directions.
- Too broad. A claim wider than what the applicant has in fact invented may take in the public domain or other people's subject matter.
- Too narrow. A narrow claim is less effective against infringement, and the full benefit of the invention may not reach the inventor.
- Several claims of different scope. Many claims, each with a different scope, give title to different aspects of the invention.
- Vague terms. Terms that confuse scope, or claims that are not specific, such as a claim for "any novel matter", should be avoided.
Structure (05.03.17)
The Manual's structural points are a useful checklist. Our own grouping is below.
| Topic | What the Manual says |
|---|---|
| Layout | Claims follow the description, start on a fresh page, are serially numbered and are preceded by the words "I / We claim" |
| Form | Each claim is one sentence, clear, succinct and not verbose |
| Unity | All claims relate to one invention or one inventive concept |
| Number | No restriction on the number of claims, but additional fee is payable when the total exceeds the number the First Schedule allows without it; take the figure from the schedule as now in force |
| Support | Fairly based on, and fully supported by, the description; every term found in or fairly inferred from the description |
| Clarity | Words such as "thin", "strong", "a major part", "such as", "when required" or "any" may cause subjective interpretation; allowed only where clear to a person skilled in the art |
| Trade marks | Not to be used where a generic term will do, and allowed in a claim only where use is unavoidable and does not introduce ambiguity |
| Parts | Preamble (category and sometimes purpose), transitional phrase ("comprising", "including", "consisting of", "consisting essentially of") and body |
| Improvement claims | Two parts separated by "characterized by" or "wherein" |
| First claim | Always an independent principal claim, defining the essential features and interrelationship needed to meet the objects |
| Independent claims | More than one allowed if under one inventive concept; the Manual advises limiting their number |
| Dependent claims | Derive antecedence from an independent claim and read in its features; those that omit, modify or substitute a feature of the independent claim should be avoided |
| Alternatives | A claim must not contain so many alternatives or variable parameters that it becomes unsearchable |
| Omnibus claim | Has no legal basis and cannot be allowed under section 10(4)(c) |
The claim count that triggers additional fee is a matter for the First Schedule as now in force.
How the objection is framed and answered
| Objection | Typical answer |
|---|---|
| Lack of unity | Show that the claims share one inventive concept, or delete the groups and file a divisional |
| Claim not clear | Replace subjective terms with measurable limits, or show that the skilled person reads the term definitely |
| Claim not fairly based or not supported | Point to the passage in the description; or amend the claim to what the description supports |
| Claim too broad | Limit to what is disclosed and enabled |
| Dependent claim broader than the independent claim | Rewrite so every feature of the independent claim is carried into the dependent claim |
| Omnibus claim (such as "an apparatus as described herein") | Delete it, and claim the features |
| Trade mark in claim | Replace with the generic name, or show that use is unavoidable and unambiguous |
| Unsearchable alternatives | Reduce the alternatives or fix the parameters |
Amendments must stay within the Act and Rules; see Chapter 5 on provisional specifications for the retyping and marked-copy method.
A worked example
Arjun Mehta Devices files six claims for a hand-held water tester. Claim 1 covers "a water tester comprising a probe, a display and a processor, characterized in that the processor compensates for temperature". Claim 4 is "any tester according to the above, as required". The examiner objects that "as required" is subjective and that claim 4 does not read in all the features of claim 1. The agent redrafts claim 4 as a dependent claim with a stated temperature range disclosed in the description, so each dependent claim carries all the features of claim 1. The objection closes.
Need help with your claims?
Claims that satisfy unity, clarity and support are the foundation of a patent that can later be enforced. Our patent drafting and filing team drafts and reviews claim sets against the Office's expectations before they are filed.
Key takeaways
- Claims relate to a single invention or one inventive concept, are clear, succinct and fairly based on the specification.
- Matter described but not claimed is treated as disclaimed.
- Claims should be neither too broad nor too narrow, and vague terms should be avoided.
- The first claim is an independent principal claim; dependent claims must carry all its features.
- An omnibus claim has no legal basis and cannot be allowed.
- The Act and Rules as now in force prevail over the Manual.
Read next
- Chapter 5: contents of the complete specification
- Chapter 5: priority dates of claims
- Chapter 9: industrial applicability, sufficiency and unity of invention
- Patent claims drafting: independent and dependent claims
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.