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

[New](https://modeldiplomat.com/)

#

Model Diplomat Research Team · Last reviewed June 22, 2026

TL;DR

- I.
- R.
- What was the central holding in I.R. Coelho v. State of Tamil Nadu?
- Why is 24 April 1973 significant in the Coelho judgment?
- Did Coelho strike down any specific Ninth Schedule law?

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

Go beyond the definition

## Research I.R. Coelho v. State of Tamil Nadu (2007) like a delegate

Model Diplomat's AI drafts position papers, speeches, and country research with real sources — built for MUN and politics students.

## Timeline

1. 24 April 1973

   State of Tamil Nadu (2007) is the Supreme Court of India judgment holding that laws placed in the Ninth Schedule after are open to judicial review against t…

2. 11 January 2007

   State of Tamil Nadu\*\*, decided unanimously on by a nine-judge Constitution Bench led by Chief Justice Y.K.

## Research it like a delegate

Research on modeldiplomat.com

## Ask a follow-up about I.R. Coelho v. State of Tamil Nadu (2007)

Open a cited briefing in Model Diplomat search — timelines, positions, and sources you can use in committee or exam answers.

[Start research on I.R. Coelho v. State of Tamil Nadu (2007)](https://modeldiplomat.com/search?q=Explain%20I.R.%20Coelho%20v.%20State%20of%20Tamil%20Nadu%20\(2007\)%20%E2%80%94%20key%20dates%2C%20actors%2C%20positions%2C%20and%20sources)

Example

In January 2007, the nine-judge bench under Chief Justice Y.K. Sabharwal in I.R. Coelho v. State of Tamil Nadu held that Ninth Schedule laws added after 24 April 1973 are open to basic-structure review.

Keep learning

## Go deeper than the definition

[Explore all Civil Service & Diplomatic Exams lessons](https://modeldiplomat.com/learn/civil-services)[Test yourself with a quiz](https://modeldiplomat.com/learn/glossary/quiz/civil-services)

## Take I.R. Coelho v. State of Tamil Nadu (2007) beyond the glossary

Ask the AI research engine built for diplomacy — get briefings, position papers, and speeches with sources you can cite in committee.