UPSC Notes

Right to Privacy (K.S. Puttaswamy vs. Union of India, 2017)

PYQs

8

Articles

1

Momentum

21

Phase IFoundation

Background

Overview

This judgment is a cornerstone of Indian constitutional law, defining a critical fundamental right. Its implications for state surveillance, data protection, and individual liberties are profound and frequently tested in UPSC exams.

The K.S. Puttaswamy vs. Union of India judgment (2017) is a landmark ruling by the Supreme Court of India that unanimously affirmed the right to privacy as a fundamental right under Article 21 of the Constitution. It recognized privacy as an intrinsic part of life and personal liberty, subject to reasonable restrictions.

Phase IIStatic core

Facts & tables

Key facts

Year of Judgment

2017

Constitutional Basis

Article 21 (Right to Life and Personal Liberty)

Key Principle

Established 'reasonable expectation of privacy' even in public spaces.

Impact

Forms the constitutional basis for data protection laws in India.

Reference table

Static syllabus anchors

TypeReference
Conceptual areaIndian Polity & Governance
Conceptual areaFundamental Rights
Conceptual areaJudiciary & Judicial Review

Reference table

Institutions & roles

BodyRole
Supreme Court of IndiaInterprets
Phase IIIExam lens

Prelims angle

Overview

Prelims angle: Factual recall

Prelims angle: Conceptual understanding

Quick revision

  • Landmark Supreme Court judgment of 2017.
  • Declared Right to Privacy a fundamental right.
  • Embedded within Article 21 (Right to Life and Personal Liberty).
  • Introduced the concept of 'reasonable expectation of privacy.'
  • Constitutional basis for data protection legislation in India.

High-confidence PYQs

Topic timeline

Indian Polity & GovernanceFundamental RightsJudiciary & Judicial Review

Smart glasses highlight gaps in privacy laws

25 Aug 2026 · The K.S. Puttaswamy judgment (2017) declared the right to privacy a fundamental right under Article 21, establishing the principle of 'reasonable expectation of privacy.' This ruling is crucial for evaluating the adequacy of data protection laws like DPDPA in the face of emerging surveillance technologies.

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Current topic

Right to Privacy (K.S. Puttaswamy vs. Union of India, 2017)

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UPSC Prelims PYQs on Right to Privacy (K.S. Puttaswamy vs. Union of India, 2017)

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