Intellectual Property Rights - Law and Practice · Indian Patent Law and its Developments

Evolution of Indian Patent Law: From 1911 to TRIPS

Updated 11 October 2026 · Fact-checked

Indian patent law moved from the Indian Patents and Designs Act, 1911 to the Patents Act, 1970, which was then amended in 1999, 2002 and 2005 to comply with the TRIPS Agreement. To answer exam questions, give the Act, its key change, the reason (TRIPS) and the legal effect, in time order.

Understand Evolution of Indian Patent Law

A patent law gives an inventor a time-limited exclusive right in return for disclosing the invention. India's law on this has changed in stages, and the exam asks you to trace those stages and explain why each one happened.

The first stage is the Indian Patents and Designs Act, 1911. It was the colonial-era law that covered both patents and designs. When the Patents Act, 1970 came, section 162(1) repealed the 1911 Act in so far as it relates to patents. The section says that this repeal is given effect by amending the 1911 Act in the manner specified in the Schedule to the 1970 Act. So the repeal works through the Schedule amendment. It is not a separate additional step.

The second stage is the Patents Act, 1970. It extends to the whole of India (section 1(2)). It did not come into force all at once. Under section 1(3), the Central Government could appoint different dates for different provisions. Any reference to the commencement of the Act in a provision is read as a reference to the coming into force of that provision. Most provisions were brought into force from 20 April 1972. Section 12(2), section 13(2), section 28, section 68 and sections 125 to 132 came into force from 1 April 1978. Sections 125 to 132 are the patent agent provisions. Section 162 is not in the 1978 group, so its commencement date is 20 April 1972. A pending infringement suit or revocation proceeding at that commencement could continue as if the 1970 Act had not been passed (section 162(5)).

The third stage is the TRIPS-driven amendments. India accepted the TRIPS Agreement as part of its WTO membership. TRIPS sets minimum standards of protection, so Indian law had to be brought up to those standards. The Patents (Amendment) Acts of 1999, 2002 and 2005 did this in steps. The 2002 Act (Act 38 of 2002) took effect from 20 May 2003 and the 2005 Act (Act 15 of 2005) from 1 January 2005. Learn those two dates, because the footnotes in the Act carry them.

The changes you can prove from the Act's text are these. Section 53(1) was substituted by the 2002 Act, and it now fixes the term of a patent at twenty years from the date of filing. For a PCT application designating India, the term runs from the international filing date (the Explanation, inserted in 2005). Several old provisions were omitted, such as section 27 (refusal of patent without opposition, omitted in 2005), section 112 (restriction on court's power to grant injunction, omitted in 2003) and section 161 (omitted in 2003). The register could be kept in electronic form from 2003 (section 67(4)). The Appellate Board under the Trade Marks Act, 1999 became the Appellate Board for patents (section 116).

Key rules to remember

Repeal of the 1911 Act: Patents Act, 1970 → repeals Indian Patents and Designs Act, 1911, in so far as it relates to patents (s. 162(1)); Only the patent part is repealed. Say 'in so far as it relates to patents'.
Saving of pending proceedings: Pending suit for infringement or proceeding for revocation at commencement → may continue as if the 1970 Act had not been passed (s. 162(5)); This is the savings rule. It protects cases already in court.
Term of patent: Term = 20 years from the date of filing (s. 53(1)); For PCT applications designating India, count from the international filing date.
Lapse for non-payment: Patent ceases to have effect if renewal fee is not paid within the prescribed or extended period (s. 53(2)); After lapse or expiry, the subject matter gets no protection (s. 53(4)).
Amendment timeline: 1911 Act → 1970 Act → Amendments of 1999, 2002 (w.e.f. 20-5-2003), 2005 (w.e.f. 1-1-2005); Use this as the skeleton of every history answer.
Commencement dates of the 1970 Act: 20-4-1972 for most provisions; 1-4-1978 for s. 12(2), s. 13(2), s. 28, s. 68 and ss. 125 to 132; Section 1(3) allows different dates for different provisions.

How to solve Evolution of Indian Patent Law questions

Use this method for any question on the history or development of Indian patent law, whether it is a short note or a case-based question.

1Read the question and mark what it asks: the full history, one Act, the effect of TRIPS, or one specific change.
2Open with the timeline in one or two lines: 1911 Act, 1970 Act, then the 1999, 2002 and 2005 amendments.
3State what the 1970 Act did to the 1911 Act, citing section 162(1), and mention the savings rule in section 162(5) if pending cases are in the facts.
4Explain why the amendments came: India had to meet the minimum standards of the TRIPS Agreement as a WTO member.
5List the specific changes the question needs, with section numbers only where you are sure, such as the 20-year term in section 53(1).
6Apply the facts: check dates, such as whether a patent was granted after the 2002 amendment came into force, and whether a case was pending at commencement.
7Close with a one-line conclusion that answers the question asked.

Quickest way: Timeline-and-Reason Method

When to use it: Use it for short notes and 5 to 8 mark questions when you have only a few minutes.

Write the four anchors: 1911, 1970, 1999 and 2002, 2005.
Write one line for each anchor: what it was or changed.
Add the TRIPS line: the amendments were made to meet TRIPS minimum standards.
Add two section-based examples, such as section 162 for repeal and section 53 for the 20-year term.
Finish with the effect: a modern law in line with international standards.

Common mistakes in Evolution of Indian Patent Law

Saying the 1970 Act repealed the whole of the 1911 Act.
Students remember 'repealed' and drop the qualifier.
Fix: The 1911 Act was a patents and designs law. Section 162(1) repeals it only in so far as it relates to patents, and this is done by amending it as specified in the Schedule.
Writing a patent term other than twenty years from the date of filing as the present law.
Older books and notes describe the pre-2003 position, and students copy it.
Fix: Under section 53(1) as it stands, the term is twenty years from the date of filing (for PCT applications designating India, from the international filing date). Use only this for the present law.
Mixing up the dates of the 2002 and 2005 amendments.
Year of the Act and date of coming into force are different.
Fix: Act 38 of 2002 took effect from 20 May 2003. Act 15 of 2005 took effect from 1 January 2005. Write both year and effective date.
Treating the 1970 Act as in force from a single date.
Students assume an Act starts on one day.
Fix: Section 1(3) allows different dates, and 'commencement' in a provision means that provision's own coming into force. Most provisions began on 20 April 1972, and the patent agent provisions (ss. 125 to 132) on 1 April 1978.
Forgetting the savings rule and saying all old cases ended when the 1970 Act began.
Students focus on repeal and ignore section 162(5).
Fix: A pending infringement suit or revocation proceeding may continue and be disposed of as if the 1970 Act had not been passed.
Describing TRIPS as a law that directly applies in India.
TRIPS is called a binding agreement, so students skip the step of legislation.
Fix: TRIPS set standards. India met them by amending its own law through the 1999, 2002 and 2005 amendments.

Worked examples

Example 1

Trace the evolution of patent law in India from 1911 and explain the role of TRIPS in the later amendments. (Short note)

Show the solution

Start with the Indian Patents and Designs Act, 1911, which dealt with patents and designs.
Move to the Patents Act, 1970. Section 162(1) repealed the 1911 Act in so far as it relates to patents, by amending it as specified in the Schedule. The 1970 Act extends to the whole of India (s. 1(2)).
Note that the 1970 Act was brought into force in parts under s. 1(3): most provisions from 20 April 1972 and ss. 125 to 132 from 1 April 1978.
Explain TRIPS: as a WTO member India had to meet its minimum standards of protection, so the Act was amended in 1999, 2002 and 2005.
Give effects: the 2002 Act (from 20 May 2003) substituted s. 53(1), fixing a twenty-year term from filing, and allowed electronic keeping of the register (s. 67(4)). The 2005 Act (from 1 January 2005) added the PCT Explanation to s. 53(1) and omitted s. 27.
Conclude that the law moved from a colonial-era statute to a modern law in line with TRIPS.

Answer: Indian patent law moved from the 1911 Act to the Patents Act, 1970 (which repealed the 1911 Act as to patents), and was then amended in 1999, 2002 and 2005 to meet TRIPS standards, producing a twenty-year term from filing, PCT term rules, electronic registers and the removal of outdated provisions.

Example 2

A suit for infringement of a patent was pending in a High Court when the Patents Act, 1970 came into force. The defendant argues that the suit must now be decided under the new Act. Advise.

Show the solution

Provision: Section 162(5) says that, notwithstanding anything in the Act, any suit for infringement of a patent or proceeding for revocation pending in any court at the commencement of the Act may be continued and disposed of as if the 1970 Act had not been passed.
Which commencement applies: under s. 1(3), a reference to commencement in a provision means the date on which that provision came into force. Section 162 is not among the provisions given the later date of 1 April 1978 (those are s. 12(2), s. 13(2), s. 28, s. 68 and ss. 125 to 132). So for s. 162 the relevant commencement is 20 April 1972.
Facts: the suit was already pending in a court on that date.
Analysis: the saving applies to suits for infringement and proceedings for revocation. This suit is an infringement suit, so it falls within the saving.
Conclusion: the defendant's argument fails because the suit can continue as if the new Act had not been passed.

Answer: The defendant is wrong. For section 162, commencement means 20 April 1972. Under section 162(5) the infringement suit pending on that date may be continued and disposed of as if the Patents Act, 1970 had not been passed.

Exam tips

Always open history answers with a dated timeline. Examiners reward chronological order.
Write the effective dates of the 2002 and 2005 amendments (20 May 2003 and 1 January 2005), not only the years.
Link every amendment to TRIPS in one sentence, then give one concrete change from the Act's text.
In case-based questions, check the dates and whether a proceeding was pending, then apply section 162(5).
Give a section number only when you are sure. A correct description with no number is safer than a wrong number.

Practice questions from Indian Patent Law and its Developments

Evolution of Indian Patent Law in other exams

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Evolution of Indian Patent Law: frequently asked questions

What law came before the Patents Act, 1970?

The Indian Patents and Designs Act, 1911 came before it. Section 162(1) of the 1970 Act repeals that Act in so far as it relates to patents.

Which amendments to the Patents Act, 1970 are important for the exam?

The Patents (Amendment) Acts of 1999, 2002 and 2005. The 2002 Act took effect from 20 May 2003 and the 2005 Act from 1 January 2005.

How did TRIPS affect Indian patent law?

TRIPS set minimum standards of protection that WTO members must meet. India amended the Patents Act, 1970 in stages to meet them, which led to changes such as a uniform twenty-year term from the date of filing.

What is the present term of a patent in India?

Under section 53(1), it is twenty years from the date of filing the application. For a PCT application designating India, it is twenty years from the international filing date.