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Indian Polity and Governance Notes

Landmark Supreme Court Judgments for UPSC Notes: Kesavananda Bharati, Maneka Gandhi, Puttaswamy, Indra Sawhney, Bommai, Vishaka and Environment Cases Explained Theme-wise

Komal Gupta

UPSC Exam Expert & Content Editor

Updated 21 Oct 2026

PDF Notes: Landmark Supreme Court Judgments for UPSC Notes: Kesavananda Bharati, Maneka Gandhi, Puttaswamy, Indra Sawhney, Bommai, Vishaka and Environment Cases Explained Theme-wise

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The Supreme Court of India has done more than decide disputes. Through its landmark judgments, it has defined the basic structure of the Constitution, widened the right to life, protected the environment, and brought the justice to the weaker sections. For UPSC, the landmark cases are important in the Prelims ("Which case is related to the basic structure?", "In which case did the Supreme Court recognise the right to privacy?") and in the Mains (as examples in GS II, the Essay and the Ethics paper). These notes arrange the important judgments by theme: constitutional supremacy, fundamental rights, federalism, social justice, environment and the recent rulings, with the year, the key holding and the memory tip.

Why Learn the Landmark Judgments?

In UPSC, a case name alone is not enough; you must know what the Court decided and why it matters. This knowledge also adds weight to the answers of the Mains. Read these notes with our notes on the Indian Judiciary, the Fundamental Rights and the Directive Principles and Fundamental Duties to understand the constitutional context.

Basic Structure and the Amendment Power

Case Year What the Court Held
Shankari Prasad v. Union of India 1951 Parliament can amend the Fundamental Rights under Article 368
Sajjan Singh v. State of Rajasthan 1965 Reaffirmed Parliament's power to amend the Fundamental Rights
Golaknath v. State of Punjab 1967 Parliament cannot amend the Fundamental Rights
Kesavananda Bharati v. State of Kerala 1973 Parliament can amend any provision, but cannot destroy the basic structure; the basic structure doctrine was born
Indira Nehru Gandhi v. Raj Narain 1975 Free and fair elections and judicial review are a part of the basic structure
Minerva Mills v. Union of India 1980 Limited power of amendment and judicial review are a part of the basic structure; the balance between the Fundamental Rights and the DPSP
I.R. Coelho v. State of Tamil Nadu 2007 Laws in the Ninth Schedule can be reviewed if they violate the basic structure

Right to Life, Liberty and Dignity (Article 21)

Case Year What the Court Held
A.K. Gopalan v. State of Madras 1950 A narrow view: 'procedure established by law' only needs a law, not a fair one
Maneka Gandhi v. Union of India 1978 The procedure must be fair, just and reasonable; Articles 14, 19 and 21 are linked; the broad interpretation of the right to life
ADM Jabalpur v. Shivkant Shukla 1976 The Habeas Corpus case during the Emergency: the rights could be suspended; later seen as a wrong judgment
Olga Tellis v. Bombay Municipal Corporation 1985 Right to livelihood is a part of the right to life (the pavement dwellers case)
Unni Krishnan v. State of Andhra Pradesh 1993 Right to education up to the age of 14 is a part of Article 21
Vishaka v. State of Rajasthan 1997 Guidelines against sexual harassment at the workplace, later turned into the 2013 Act
D.K. Basu v. State of West Bengal 1997 Guidelines on the arrest and the detention, against custodial violence
Common Cause v. Union of India 2018 Right to die with dignity: passive euthanasia and living will are allowed under the safeguards
K.S. Puttaswamy v. Union of India 2017 Right to privacy is a Fundamental Right under Article 21; the Aadhaar case followed in 2018
Navtej Singh Johar v. Union of India 2018 Section 377 was struck down in so far as it criminalised the consensual same-sex acts between adults
Joseph Shine v. Union of India 2018 Adultery was decriminalised; Section 497 IPC was struck down
Shayara Bano v. Union of India 2017 Instant triple talaq was held unconstitutional
NALSA v. Union of India 2014 The transgender persons recognised as the 'third gender' with the right to the self-identified gender

Freedom of Speech and Civil Liberties

Case Year What the Court Held
Romesh Thappar v. State of Madras 1950 Freedom of the press is a part of the freedom of speech
Shreya Singhal v. Union of India 2015 Section 66A of the IT Act was struck down as it violated the freedom of speech
People's Union for Civil Liberties v. Union of India 2013 The NOTA option on the voting machines
Lily Thomas v. Union of India 2013 The legislators convicted for a serious offence are disqualified immediately
Lalita Kumari v. Government of Uttar Pradesh 2014 Registration of an FIR is mandatory when a cognisable offence is disclosed
Bachan Singh v. State of Punjab 1980 The death penalty is constitutional only in the 'rarest of rare' cases

Federalism, Governance and the Executive

Case Year What the Court Held
State of West Bengal v. Union of India 1963 The Union has a stronger position, with a federal structure of a special kind
S.R. Bommai v. Union of India 1994 Judicial review of the President's Rule; federalism and secularism are basic features; floor test
Vineet Narain v. Union of India 1997 Directions to give the CBI independence and the Central Vigilance Commission a statutory status
Prakash Singh v. Union of India 2006 Directions for the police reforms
Government of NCT of Delhi v. Union of India 2018 The Lieutenant Governor must act on the aid and advice of the elected government except in the matters reserved for him
Kuldip Nayar v. Union of India 2006 The open ballot in the Rajya Sabha elections was upheld

Social Justice and Reservation

Case Year What the Court Held
State of Madras v. Champakam Dorairajan 1951 Led to the First Amendment and the Article 15(4)
Indra Sawhney v. Union of India 1992 The Mandal case: upheld the 27 per cent OBC reservation, the 50 per cent ceiling, the creamy layer exclusion, and no reservation in promotions
M. Nagaraj v. Union of India 2006 Conditions for the reservation in promotion: backwardness, inadequate representation and efficiency
Janhit Abhiyan v. Union of India 2022 The 103rd Amendment on the EWS reservation was upheld
Shah Bano case (Mohd. Ahmed Khan v. Shah Bano Begum) 1985 Maintenance for a divorced Muslim woman under the CrPC, later followed by the 1986 Act

Environment and Public Interest Litigation

Case Year What the Court Held
Rural Litigation and Entitlement Kendra v. State of UP (Dehradun quarrying) 1985 The first major environmental case; the closure of the limestone quarries
M.C. Mehta v. Union of India (Oleum Gas Leak) 1986 The principle of absolute liability for the hazardous industries; the Ganga pollution and the Taj Mahal cases followed
Vellore Citizens' Welfare Forum v. Union of India 1996 The precautionary principle and the polluter pays principle are part of the law
T.N. Godavarman Thirumulpad v. Union of India 1996 The wide definition of 'forest' and the continuing mandamus for the forest protection
Indian Council for Enviro-Legal Action v. Union of India 1996 The polluter pays principle applied in the case of the chemical industries
Narmada Bachao Andolan v. Union of India 2000 The case on the dam, the rehabilitation of the displaced people

Principles to Remember

  • Basic structure: The Constitution's core cannot be altered by an amendment.
  • Doctrine of eclipse and severability: A law violating the Fundamental Rights is not dead, but inoperative; part of the law can be struck down while the rest survives.
  • Locus standi: The PIL relaxed the rule that only the affected person can approach the court.
  • Judicial review: The power to test the validity of the laws and the executive actions; it is a basic feature.
  • Judicial activism and overreach: Activism protects the rights when the other organs fail, but overreach can disturb the separation of powers.

The Mains Angle

For the Mains, use the judgments as evidence in your answers. In an answer on rights, cite Maneka Gandhi and Puttaswamy; on federalism, S.R. Bommai and the Delhi case; on social justice, Indra Sawhney and Vishaka; on the environment, M.C. Mehta and Vellore. For a critical view, discuss the balance between the judicial activism and the separation of powers, the delays and the pendency of cases, and the importance of the constitutional morality. Always name the case with one line of what it decided.

Previous-Year Style Practice

  • In which case was the right to privacy declared a Fundamental Right? Answer: K.S. Puttaswamy v. Union of India (2017).
  • Which case introduced the 'rarest of rare' doctrine? Answer: Bachan Singh v. State of Punjab (1980).
  • Which case set the 50 per cent ceiling on the reservation? Answer: Indra Sawhney v. Union of India (1992).
  • Which case laid down the guidelines against the sexual harassment at the workplace? Answer: Vishaka v. State of Rajasthan (1997).

Frequently Asked Questions (FAQ)

Which case gave the basic structure doctrine?

Kesavananda Bharati v. State of Kerala (1973).

Which case recognised the right to privacy as a Fundamental Right?

K.S. Puttaswamy v. Union of India (2017).

Which case decided the Mandal Commission issue?

Indra Sawhney v. Union of India (1992), which upheld the 27 per cent OBC reservation and set the 50 per cent ceiling.

Which case dealt with the sexual harassment at the workplace?

Vishaka v. State of Rajasthan (1997).

Which case struck down Section 66A of the IT Act?

Shreya Singhal v. Union of India (2015).

Which case recognised the transgender people as the third gender?

NALSA v. Union of India (2014).

Which case laid down the polluter pays principle?

Vellore Citizens' Welfare Forum (1996) and M.C. Mehta cases.

Which case concerned the President's Rule?

S.R. Bommai v. Union of India (1994).

Which case decriminalised the consensual same-sex acts?

Navtej Singh Johar v. Union of India (2018).

Which case introduced the 'rarest of rare' doctrine for the death penalty?

Bachan Singh v. State of Punjab (1980).

Which case is known as the Habeas Corpus case of the Emergency?

ADM Jabalpur v. Shivkant Shukla (1976).

How should I prepare the cases for the Prelims?

Learn them theme-wise with the year and one line of the holding.

About the Author

Komal Gupta

UPSC Exam Expert & Content Editor

Komal is a senior UPSC exam strategist with 8+ years of experience helping aspirants crack CSE, CDS and NDA exams. She writes in-depth notification breakdowns, exam pattern guides and preparation strategies.