Most petitions under Section 34 of the Arbitration and Conciliation Act, 1996 invoke "patent illegality"; few plead it correctly. Inserted as sub-section (2A) by the 2015 amendment, the ground allows a court to set aside a domestic award vitiated by an illegality that appears on the face of the award and goes to the root of the matter — while expressly denying relief for mere erroneous application of the law or re-appreciation of evidence. The distance between those two sentences is where most challenges are won and lost. This piece maps that distance.
Where the ground came from
Before 2015, "patent illegality" lived inside the public-policy ground, judicially developed and uncomfortably elastic. The Arbitration and Conciliation (Amendment) Act, 2015 gave it a statutory home — Section 34(2A) — and simultaneously fenced it: the ground applies only to domestic awards, the illegality must appear on the face of the award, and the provision\'s proviso forbids setting aside for mere error of law or on re-appreciation of evidence. The design is deliberate. Parliament preserved a safety valve for awards that are lawless in a visible way, while shutting the door on the disappointed party\'s instinct to retry the case under the label of illegality.
The working test
Not patent illegality
A wrong-but-arguable reading of a contract clause. A preference for one witness over another. A damages computation the court finds generous. An error of law that required argument to expose. Each of these is, at worst, an erroneous application of law or a different view of evidence — and the statute protects the award against all of them.
Patent illegality
Answering a question the claim never asked. Importing a precondition the contract expressly excludes. Ignoring the governing statute. Internally contradictory findings that decide nothing. The defect must be visible on the award\'s own face and must go to the root of the matter — remove it, and the operative result cannot stand.
The doctrine at work: a claim-by-claim illustration
The Delhi High Court\'s Division Bench decision in MMTC Ltd v. Chauhan Jewellers (27 October 2026) shows the discipline applied with unusual clarity, because the same award yielded both outcomes. Of five export-consignment claims a tribunal had rejected, three rejections were upheld as possible views of conflicting evidence — the court refusing to reappraise who caused a redirection of parcels or a short realisation. Two rejections fell: one because the tribunal rejected an interest-on-delay claim by inquiring into a shortfall that was never the question, misreading cash-on-delivery terms as letter-of-credit terms; the other because the tribunal made collection of returned goods a precondition to a financing claim that the contract\'s direct-recovery provisions expressly did not require. The consequential direction — return of mortgaged title deeds — fell with the findings that supported it. One award, five claims, two illegalities: the ground worked exactly as designed.
Drafting the challenge — and resisting it
- Plead by finding, not by grievance: identify the paragraph of the award, the text it contradicts, and why the result cannot survive the defect.
- Stay on the face of the award. The moment the argument needs the transcript or the exhibits re-weighed, it has left Section 34(2A).
- Argue severability both ways: challengers should isolate infected findings; award-holders should show the operative result stands independently of the attacked reasoning.
- Remember the forum\'s limits persist on appeal: Section 37 adds no wider jurisdiction, so an argument that fails the 34(2A) test below fails it above.
The deeper lesson is for the arbitration itself. Awards attract patent-illegality challenges when their reasoning drifts from the questions the pleadings posed. Tribunals that frame each claim precisely, answer the claim as framed, and tie every precondition to the contract\'s text leave Section 34(2A) nothing to bite on — and parties who want durable awards should press their tribunals, claim by claim, to do exactly that.
Frequently Asked Questions
Which awards can be challenged for patent illegality?
Only awards arising out of arbitrations other than international commercial arbitrations — that is, purely domestic awards. For international commercial arbitrations seated in India, Section 34(2A) is unavailable, and the challenge must fit the narrower grounds of Section 34(2), principally incapacity, invalid agreement, due-process violations, excess of jurisdiction and conflict with the public policy of India.
What kinds of defects qualify as patent illegality?
Illegality apparent on the face of the award that goes to its root: deciding a question the claim never posed, rewriting the contract by adding conditions the parties excluded, ignoring the substantive law, or reasoning so internally contradictory that no determination of the real issue exists. In MMTC Ltd v. Chauhan Jewellers (Delhi High Court, 27 October 2026), a tribunal that answered an interest claim by inquiring into a shortfall, and one that made realisation of returned goods a precondition the contract expressly excluded, committed patent illegality on both counts.
What is excluded from the ground?
Two things by statute: an award cannot be set aside merely for erroneous application of the law, nor by re-appreciating evidence. Where the tribunal has taken a possible view of conflicting material — even a view the court would not itself have taken — the award stands. In the same MMTC judgment, three of the five claim rejections survived precisely because they were plausible readings of messy commercial evidence.
How should a Section 34 petition plead the ground?
Claim by claim, defect by defect. Identify the specific finding, quote the contractual or statutory text it contradicts, and show the contradiction from the award's own face — not from the evidence the tribunal weighed. Severability matters: where the illegality infects discrete findings, courts can set aside those findings and their consequential directions while preserving the rest, which is exactly what the Division Bench did in MMTC.