Minerva Mills Ltd. v. Union of India, decided on 31 July 1980 and reported as AIR 1980 SC 1789, arose from the nationalisation of a sick textile undertaking in Bangalore under the Sick Textile Undertakings (Nationalisation) Act, 1974. The mill's owners initially challenged the takeover, but the litigation transformed into a constitutional contest over the validity of the Forty-second Amendment Act, 1976, enacted during the Emergency by the Indira Gandhi government. The case is the direct doctrinal sequel to Kesavananda Bharati v. State of Kerala (1973), which had established the basic structure doctrine holding that Parliament's amending power under Article 368 cannot be used to alter the Constitution's essential features. A Constitution Bench led by Chief Justice Y.V. Chandrachud, with Justice P.N. Bhagwati writing partly in dissent, used Minerva Mills to test how far the Emergency-era Parliament had encroached on that limit.
The procedural core concerned two clauses inserted into Article 368 itself by Sections 4 and 55 of the 42nd Amendment. The newly added Article 368(4) declared that no constitutional amendment "shall be called in question in any court on any ground," while Article 368(5) declared that there was no limitation whatever on Parliament's constituent power to amend the Constitution. The petitioners argued that these clauses purported to grant Parliament unlimited power to amend the document — including the power to repeal the very limitations Kesavananda had identified — and to immunise such amendments from judicial review. The Court reasoned in stages: a limited amending power is itself a basic feature; if Parliament could expand that power to make it unlimited, it would be destroying the foundation on which its own authority rested. A donee of limited power cannot, by exercising that power, convert the limited power into an unlimited one.
The second limb of the judgment addressed Section 4 of the 42nd Amendment, which had rewritten Article 31C. The amended Article 31C gave primacy to all the Directive Principles of State Policy in Part IV over the fundamental rights guaranteed by Article 14 (equality) and Article 19 (the freedoms), providing that no law giving effect to any directive principle could be challenged for inconsistency with those rights. The Court held that this destroyed the balance between Parts III and IV of the Constitution. Chief Justice Chandrachud held that fundamental rights and directive principles together constitute the core commitment to social revolution, and that to give absolute primacy to one over the other would disturb the harmony the Constitution sought to preserve. By a 4-1 majority the Court struck down the expanded Article 31C, restoring it to its pre-1976 form, which had protected only laws implementing the directives in Articles 39(b) and 39(c).
The judgment crystallised two principles that remain operative across Indian constitutional governance. First, limited amending power and judicial review are themselves part of the basic structure and cannot be ousted; the Court read down Article 368(4) and (5) as void. Second, the harmony and balance between fundamental rights and directive principles is a basic feature. These holdings were repeatedly cited in later litigation, including Waman Rao v. Union of India (1981), I.R. Coelho v. State of Tamil Nadu (2007) — which subjected even Ninth Schedule laws enacted after 24 April 1973 to basic-structure scrutiny — and the NJAC judgment of 2015, where the Supreme Court invoked judicial review as a basic feature to invalidate the 99th Amendment. For UPSC General Studies Paper II and constitutional law candidates, Minerva Mills is the standard authority for the proposition that judicial review and the rights–directives balance are unamendable.
Minerva Mills must be distinguished from its predecessors and adjacent doctrines. Kesavananda Bharati originated the basic structure doctrine but did not enumerate an exhaustive list; Minerva Mills applied it to invalidate specific clauses. It is distinct from Indira Nehru Gandhi v. Raj Narain (1975), which applied basic structure to an electoral-dispute amendment, and from the Golaknath case (1967), which had held that fundamental rights could not be amended at all — a position Kesavananda overruled. Minerva Mills is also distinct from the doctrine of harmonious construction, a tool of statutory interpretation, although the judgment invokes a harmony-of-Parts reasoning that resembles it in spirit.
A persistent controversy concerns the precise present status of Justice Bhagwati's partial dissent and the question whether striking down an amending clause "revives" the earlier text — a doctrine of revival the Court accepted here but which some scholars contest. Another debated point is whether Article 368(4) and (5) remain formally on the statute book; because the Court declared them void rather than ordering their textual deletion, they appear in printed copies of the Constitution with footnoted annotations that they have been held unconstitutional. The 2007 Coelho ruling reaffirmed Minerva Mills as the touchstone for testing amendments against Articles 14, 19 and 21 read together as the "golden triangle."
For the working practitioner — the desk officer briefing on constitutional reform, the policy researcher assessing the limits of legislative action, or the civil-service aspirant — Minerva Mills supplies the operative rule that no Parliament, however large its majority, can confer on itself unlimited or unreviewable amending power. It marks the maturation of the basic structure doctrine from an abstract principle into an enforceable constraint, and it remains the leading citation whenever a constitutional amendment is challenged as destroying the document's essential architecture.
Example
In 2015 the Supreme Court cited Minerva Mills to hold judicial review a basic feature while striking down the 99th Constitutional Amendment establishing the National Judicial Appointments Commission.
Frequently asked questions
The Court invalidated Section 55, which had inserted Article 368(4) and (5) barring judicial review of amendments and declaring Parliament's amending power unlimited. It also struck down Section 4, which had expanded Article 31C to give all directive principles primacy over Articles 14 and 19, restoring Article 31C to its pre-1976 form.
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