---
title: "I.R. Coelho v. State of Tamil Nadu (2007) — Definition"
description: "I.R. Coelho v. State of Tamil Nadu (2007) established that Ninth Schedule laws post-1973 are subject to judicial review, impacting constitutional law in India."
url: "https://modeldiplomat.com/learn/glossary/ir-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 critical date in I.R. Coelho?
- Did Coelho strike down all Ninth Schedule laws?
- What is the difference between Coelho and 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 unanimous nine-judge Supreme Court of India ruling holding that laws placed in the Ninth Schedule after are subject to judic…

2. 11 January 2007

   State of Tamil Nadu\*\*, decided on by a unanimous nine-judge Constitution Bench of the Supreme Court of India headed by Chief Justice Y.K.

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Example

In its 11 January 2007 judgment, Chief Justice Y.K. Sabharwal's nine-judge bench held that Tamil Nadu's post-1973 Ninth Schedule laws could be tested against fundamental rights, ending their assumed blanket immunity under Article 31B.

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