---
title: "I.R. Coelho Case (2007): Ninth Schedule Review"
description: "I.R. Coelho v. State of Tamil Nadu (2007) ruled Ninth Schedule laws added after 24 April 1973 face basic-structure review — a key UPSC GS2 polity judgment."
url: "https://modeldiplomat.com/learn/glossary/i-r-coelho-case-2007"
---

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Model Diplomat Research Team · Last reviewed June 22, 2026

TL;DR

- I.
- R.
- Why is 24 April 1973 the decisive date in I.R. Coelho?
- Does Coelho mean every Ninth Schedule law is now invalid?
- How does Coelho differ from Kesavananda Bharati?

[Civil Service & Diplomatic Exams](https://modeldiplomat.com/learn/civil-services/glossary)Updated June 22, 2026

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## Timeline

1. 24 April 1973

   State of Tamil Nadu (2007) is a Supreme Court of India ruling holding that laws placed in the Ninth Schedule after are subject to judicial review on basic-s…

2. 11 January 2007

   State of Tamil Nadu\*\* (2007) 2 SCC 1, decided by a unanimous nine-judge Constitution Bench of the Supreme Court of India on under Chief Justice Y.K.

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In its 11 January 2007 ruling, Chief Justice Y.K. Sabharwal's nine-judge Bench held that Tamil Nadu's 1993 reservation law and other post-1973 Ninth Schedule entries must withstand basic-structure scrutiny.

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