Contents of specifications
Section 10 of the Patents Act, 1970 deals with contents of specifications. Every specification, whether provisional or complete, shall describe the invention and shall begin with a title sufficiently indicating the subject-matter to which the invention relates. The Act came into force on 01 Apr 1978.
(1) Every specification, whether provisional or complete, shall describe the invention and shall begin with a title sufficiently indicating the subject-matter to which the invention relates.
(2) Subject to any rules that may be made in this behalf under this Act, drawings may, and shall, if the Controller so requires, be supplied for the purposes of any specification, whether complete or provisional; and any drawings so supplied shall, unless the Controller otherwise directs, be deemed to form part of the specification, and references in this Act to a specification shall be construed accordingly.
(3) If, in any particular case, the Controller considers that an application should be further supplemented by a model or sample of anything illustrating the invention or alleged to constitute an invention, such model or sample as he may require shall be furnished 1[before the application is found in order for grant of a patent], but such model or sample shall not be deemed to form part of the specification.
(4) Every complete specification shall--
(a) fully and particularly describe the invention and its operation or use and the method by which it is to be performed;
(b) disclose the best method of performing the invention which is known to the applicant and for which he is entitled to claim protection; and
(c) end with a claim or claims defining the scope of the invention for which protection is claimed.
2[(d) be accompanied by an abstract to provide technical information on the invention:
Provided that--
(i) the Controller may amend the abstract for providing better information to third parties; and
(ii) if the applicant mentions a biological material in the specification which may not be described in such a way as to satisfy clauses(a) and (b), and if such material is not available to the public, the application shall be completed by depositing 3[the material to an international depository authority under the Budapest Treaty] and by fulfilling the following conditions, namely:--
4[(A) the deposit of the material shall be made not later than the date of filing the patent application in India and a reference thereof shall be made in the specification within the prescribed period];
(B) all the available characteristics of the material required for it to be correctly identified or indicated are included in the specification including the name, address of the depository institution and the date and number of the deposit of the material at the institution;
(C) access to the material is available in the depository institution only after the date of the application for patent in India or if priority is claimed after the date of the priority;
(D) disclose the source and geographical origin of the biological material in the specification, when used in an invention.]
5[(4A) Incase of an international application designating India, the title, description, drawings, abstract and claims filed with the application shall be taken as the complete specification for the purposes of this Act.]
6[(5) The claim or claims of a complete specification shall relate to a single invention, or to a group of inventions linked so as to form a single inventive concept, shall be clear and succinct and shall be fairly based on the matter disclosed in the specification.]
(6) A declaration as to the inventorship of the invention shall, in such cases as may be prescribed, be furnished in the prescribed form with the complete specification or within such period as may be prescribed after the filing of that specification.
(7) Subject to the foregoing provisions of this section, a complete specification filed after a provisional specification may include claims in respect of developments of, or additions to, the invention which was described in the provisional specification, being developments or additions in respect of which the applicant would be entitled under the provisions of section 6 to make a separate application for a patent.
Section 10, The Patents Act, 1970 (Act 39 of 1970).
Cross-references
Extracted from the operative text of the enactments themselves. Every destination below exists in our corpus.
Related judgements & precedents
These are some judgments that construed this section, and hold precedence value. They hold authority on how to read, interpret and use this section.
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Galatea Ltd. v. Controller of Patents
Court's Decision & Legal Precedent
s.10(4)/(5) require the complete specification to sufficiently and clearly enable the invention. On diamond-imaging molten selenium method claims, wider temperature ranges can be justified where the spec discloses gel/semi-solid selenium behaviour; a method claim lacking enabling disclosure for imaging/flaw detection (claim 4) fails s.10 and must be deleted, while amended claim 1 may proceed to grant.
On this section: Court set aside Controller refusal, directed grant subject to amending claim 1 (“consisting of selenium”) and deleting non-enabled claim 4 for s.10 insufficiency.
The holding above is the ratio decidendi as extracted from the judgment by eCourts India, reproduced unaltered — it is a rendering of the court's reasoning, not a substitute for its words. Read the order itself before relying on it.
Judgments citing this section
These may be obiter dicta or a precedent, for you to study. These are the judgments where this section is quoted.
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… This aspect of the decision, however, is not particularly relevant to the case at hand, as the inventors of IN 176 and IN 161 are different. 28. Even while holding that one invention was entitled only to one patent, the Division Bench relied on Section 10(5) of the Patents Act47 to observe that one patent could cover many inventions, provided they involved a single inventive step. In such a case, the holder of the patent could sue anyone for infringement, who, by making a slight change in the inventive step, claimed his product to be different. It was clarified, …
Made under this section, and citing it
2 instruments name this provision in its title or its text without being made under it.
Questions about Section 10
What have the courts held on Section 10 of the Patents Act?
Galatea Ltd. v. Controller of Patents (15 Apr 2024) is the leading judgment on this section among those set out below: Court set aside Controller refusal, directed grant subject to amending claim 1 (“consisting of selenium”) and deleting non-enabled claim 4 for s.10 insufficiency.
How do I find court cases under Section 10 of the Patents Act?
In judgments and charge sheets this section is written several ways, and each form finds a different set of orders. These search the full text of every order eCourtsIndia holds, best matches first: Patents Act 10, section 10 Patents Act, section 10 of the Patents Act. Each opens the full list of orders on eCourtsIndia, where it can be narrowed by court, year and outcome. 1 reported judgment on this section is set out on this page, beginning with Galatea Ltd. v. Controller of Patents (15 Apr 2024).
What should I read with Section 10 of the Patents Act, and has it changed?
Its own text turns on section 6 (Persons entitled to apply for patents), so none of them can safely be read on its own. 3 other provisions in this corpus refer back to it. 2 instruments name it without being made under it, most recently The Patents (Amendment) Rules, 2016 (2016), then The Patents Rules, 2003 (2003).
When did Section 10 of the Patents Act come into force?
Section 10 of the Patents Act, cited as Patents Act 10, came into force on 01 Apr 1978, having been enacted on 19 Sep 1970. It is in force as at the date shown on this page.
Other sections of this Act
Source and method. Compiled from the enactments of Parliament and of the State legislatures as published on India Code, and republished together with commentary and other original matter under section 52(1)(q)(ii) of the Copyright Act, 1957. Structured, cross-referenced and maintained by eCourtsIndia. Text as in force on 15 Oct 2026. This page is not a substitute for legal advice.