K.S. Puttaswamy v. Union of India Explained: How Privacy Became a Fundamental Right Under Article 21

Privacy is something most people take for granted. But for many years, Indian courts debated whether the Constitution even protects it. That debate ended on 24 August 2017, when a nine-judge bench of the Supreme Court declared that the right to privacy is a fundamental right under the Constitution of India.

This case, K.S. Puttaswamy v. Union of India, is now one of the most important judgments in Indian constitutional law. It is regularly asked in Civil Judge exams, PCS J exams, and other judiciary exams across the country. If you are preparing for a judiciary exam, this case is one you simply cannot skip.

Background: Who Is K.S. Puttaswamy?

Justice K.S. Puttaswamy was a retired judge of the Karnataka High Court. In 2012, he filed a writ petition before the Supreme Court challenging the constitutional validity of the Aadhaar scheme, which was introduced by the UPA Government.

His main concern was that collecting biometric data of citizens on a massive scale violated their right to privacy. The government, on the other hand, argued that there was no fundamental right to privacy under the Constitution at all.

The Legal Problem: Two Old Judgments in the Way

Before the Supreme Court could decide whether privacy is a fundamental right, it had to deal with two earlier decisions that stood in the way:

• M.P. Sharma v. Satish Chandra (1954): An eight-judge bench had ruled that there is no right to privacy under the Constitution.

• Kharak Singh v. State of Uttar Pradesh (1964): A six-judge bench had made similar observations, though it also held that some aspects of privacy are protected under Article 21.

In August 2015, a three-judge bench noted that these two cases needed to be re-examined. The matter was first placed before a five-judge bench. Later, in July 2017, it was referred to a nine-judge bench to settle the question once and for all.

The Nine-Judge Bench

The bench was headed by Chief Justice J.S. Khehar and included Justices Jasti Chelameswar, S.A. Bobde, D.Y. Chandrachud, Abdul Nazeer, Rohinton Nariman, R.K. Agarwal, Abhay Sapre, and Sanjay Kishan Kaul. Arguments began on 19 July 2017 and concluded on 2 August 2017.

The Key Legal Issue

The core question before the court was:

• Is the right to privacy an intrinsic part of the right to life and personal liberty under Article 21?

• Is it also protected by the freedoms guaranteed under Part III of the Constitution?

The Judgment: 24 August 2017

On 24 August 2017, all nine judges unanimously held that privacy is a fundamental right guaranteed by the Constitution. The bench overruled both M.P. Sharma and Kharak Singh to the extent that they denied the existence of a right to privacy.

The majority opinion was authored by Justice D.Y. Chandrachud on behalf of Chief Justice Khehar and Justices Agrawal, Nazeer, and himself. The other five judges wrote separate concurring opinions. All of them agreed on the final conclusion.

Key findings of the judgment:

• Privacy is not merely a common law right. It is a constitutional right flowing from Article 21.

• Privacy protects an individual's right to make personal choices, control personal information, and live with dignity.

• The right to privacy is not absolute. It can be restricted by the state, but only when restrictions are lawful, necessary, and proportionate.

Why Is This Judgment Important for Judiciary Aspirants?

The Puttaswamy judgment is a cornerstone of modern Indian constitutional law. It has been cited in many landmark judgments that followed:

• Navtej Johar v. Union of India (2018): Decriminalisation of consensual same-sex relations under Section 377 IPC.

• Joseph Shine v. Union of India (2018): Striking down of the adultery law.

For judiciary exam preparation, this case covers several important topics in one:

• Scope of Article 21

• Interpretation of Part III of the Constitution

• Doctrine of proportionality

• Overruling of earlier constitutional benches

Exam Preparation Point of View (POV)

Prelims

For Judiciary Prelims, focus on:

• Date of judgment: 24 August 2017

• Number of judges: Nine

• Cases overruled: M.P. Sharma (1954) and Kharak Singh (1964)

• Constitutional provision: Article 21, Part III

• Petitioner: Justice K.S. Puttaswamy (Retired)

Mains

For Judiciary Mains, practice writing on:

• The evolution of right to privacy in India

• The doctrine of proportionality as applied in this case

• How this judgment changed the law on fundamental rights

• The connection between privacy and dignity under Article 21

Interview

For the judiciary interview, be ready to discuss:

• The significance of a nine-judge bench ruling

• Privacy versus national security (the Aadhaar angle)

• How subsequent judgments relied on Puttaswamy

At Aashayein Judiciary, Nitesh Sir covers landmark cases like Puttaswamy in detail during the constitutional law sessions. The focus is always on how to apply these judgments in both Prelims MCQs and Mains answer writing.

Conclusion

K.S. Puttaswamy v. Union of India is not just a case about Aadhaar. It is a case about the right to be left alone, to control your own life, and to live with dignity. By recognising privacy as a fundamental right under Article 21, the Supreme Court reaffirmed that the Constitution protects the individual, not just the state.

For judiciary aspirants, this case is a must-study. Understand it well, not just the facts but also the reasoning, and you will be well-prepared for any question on constitutional law.

Frequently Asked Questions (FAQs)

Q1. What is the K.S. Puttaswamy case about?

It is about whether the right to privacy is a fundamental right under the Indian Constitution. The Supreme Court unanimously held that it is.

Q2. When was the judgment delivered?

The judgment was delivered on 24 August 2017.

Q3. How many judges decided this case?

Nine judges decided this case.

Q4. Which cases were overruled by the Puttaswamy judgment?

M.P. Sharma v. Satish Chandra (1954) and Kharak Singh v. State of Uttar Pradesh (1964) were overruled.

Q5. Under which article is the right to privacy now protected?

It is protected under Article 21 of the Constitution, and also flows from the broader Part III of the Constitution.

Q6. Is the right to privacy absolute?

No. It can be restricted by the state, but only when the restriction is lawful, necessary, and proportionate.

Q7. Who filed the petition in the Puttaswamy case?

Justice K.S. Puttaswamy, a retired judge of the Karnataka High Court, filed the petition in 2012.

Q8. How did the Puttaswamy judgment influence later cases?

It was cited in the Navtej Johar case (2018) and the Joseph Shine case (2018), among