Section 5 of the Patents Act, 1970
Inventions where only methods or processes of manufacture patentable
Now omitted; it once allowed only process patents, not product patents, for food, medicine and chemically produced substances.
Official legal text
The number is still shown because Indian statutes are not renumbered when something is taken out. The provision is simply marked as omitted. Documents created before the change, including granted patents and decided cases, continue to cite it, so the reference has to remain understandable.
Treat this page as a guide. The provision as officially published, along with the Gazette notifications that apply to it, remains the governing text and overrides any simplification here.
What this section says, in plain language
Before 2005, Section 5 was the backbone of India's process-only patent regime. For substances intended for use as food or medicine or drug, and for substances produced by chemical processes, no patent could be granted on the substance itself. Only the method or process of manufacture could be patented. The design was deliberate: it let Indian manufacturers make the same medicine by a different route, and it is a large part of why India built a strong generic pharmaceutical industry from the 1970s onwards.
Section 5 was omitted by the Patents (Amendment) Act, 2005, with effect from 1 January 2005, when India completed the transition required by the TRIPS Agreement. Product patents then became available in all fields of technology. Two transitional mechanisms sit alongside the omission: applications for such product patents could be filed from 1 January 1995 and were held in a mailbox until they could be examined, and Sections 24A to 24F, now themselves omitted, created a temporary Exclusive Marketing Rights regime. A proviso in Section 11A still protects enterprises that had made a significant investment and were producing and marketing a mailbox product before 1 January 2005, allowing them to continue on payment of a reasonable royalty. Today, patentability of medicines and chemicals is decided under the ordinary tests filtered through Section 3, and Section 3(d) is often described as the policy successor to the old Section 5.
Why this section matters
Anyone reading pre-2005 Indian patent files, and students or professionals tracing how Indian pharmaceutical patent policy developed.
When interpreting old grants and applications, or when understanding why Section 3(d) exists in its current form.
Nothing today. It has been omitted, and product patents are available across all fields of technology.
You may misread an old process-only patent as covering the product, or assume India has never allowed product patents on medicines.
How it works in practice
Why the old file only claims a process
A Vadodara chemical manufacturer, Nishant Fine Chemicals Pvt Ltd, is preparing a licensing package and reviews its oldest Indian grant, obtained in 1993 for a widely used active ingredient. The company's newer team is puzzled that the patent claims only a specific method of manufacture and never the compound itself, even though the compound was the commercial prize. The answer lies in the Section 5 regime then in force, which allowed patents only on processes for substances used as medicine or produced by chemical processes. A competitor who reached the same compound by a materially different route did not infringe. The team notes two consequences. First, the licensing description must be corrected, because the company cannot promise exclusivity over the substance. Second, filings made after 1 January 2005 are governed by the current law, where product claims are available but must survive Section 3(d) and the usual tests.
Simplified illustration only. Actual legal outcomes depend on the facts.
Key points to remember
- Section 5 restricted patents on food, medicine, drugs and chemically produced substances to process claims only.
- It was omitted by the Patents (Amendment) Act, 2005, effective 1 January 2005, to meet India's TRIPS obligations.
- Product patents are now available in every field of technology, subject to Sections 3 and 4, with Section 3(d) carrying much of the old policy weight.
Connected provisions
The Patents Act sets the requirement; the Patents Rules, 2003 set the procedure that carries it out. Parliament passes the Act and the Central Government makes the Rules, so the two are separate instruments. We list the connected rules here to take you from the principle to the paperwork.
Forms, deadlines and fees
Where a fee is payable under this provision, the figure comes from the First Schedule. Categories of applicant are charged at different rates, and electronic filing is treated differently from paper filing, so an accurate number can only come from the Schedule in force on the day you file. How Indian patent fees work.
Amendment history
What changed in this provision, newest first. Read the footnotes in the official consolidated text for the full record.
- 2005The Patents (Amendment) Act, 2005The section was omitted. Until then only process patents were available for medicines, foods and chemical products, so its removal opened product patents in every field of technology.
- 2002The Patents (Amendment) Act, 2002An explanation was added confirming that chemical processes included biochemical, biotechnological and microbiological processes, while the section still applied.
- 1999The Patents (Amendment) Act, 1999The section was reorganised so that applications for product patents on medicines and agricultural chemicals could be filed and held for later examination under the transitional arrangement. Attribution pending reviewer confirmation.
Compiled from official consolidated texts and Gazette notifications. See the site-wide change log.
Related judgments
This part of the page is reserved for summaries of decided cases. They are added one at a time, after review by a person qualified to confirm that the summary matches the judgment. Nothing has been cleared for this provision so far, so there is nothing to show. How case notes are prepared.
Questions people ask about Section 5
When did India start granting product patents for medicines?
India began granting product patents in all fields of technology after the Patents (Amendment) Act, 2005, which took effect from 1 January 2005 and omitted Section 5. Applications for such product patents could be filed from 1 January 1995 under the mailbox arrangement and were held until examination became possible. Grants on those mailbox applications began after 2005. Before that, only the process of manufacture could be patented for medicines, food and substances produced by chemical processes.
Does Section 5 of the Patents Act still exist?
No. Section 5 has been omitted from the statute and creates no rights or restrictions today. You will still see it discussed in older judgments, textbooks and licence documents, and it explains why many pre-2005 Indian patents in pharmaceuticals and chemicals contain only process claims. For anything filed after 1 January 2005, patentability of a substance is decided under Section 2, Section 3, especially Section 3(d), and Section 4, not under Section 5.
Reading an older Indian patent file?
MYCrave Consultancy helps you understand what a pre-2005 grant actually protects and what it does not.
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