More than perhaps any other branch of Indian commercial law, arbitration has been built case by case. The bare text of the Arbitration and Conciliation Act, 1996 is lean and UNCITRAL-modelled, but its real contours were drawn by the Supreme Court — sometimes expanding judicial power, sometimes furiously retreating from it. This note walks through the judgments an examiner expects you to know cold: Bhatia International and its overruling in BALCO; SBP & Co v Patel Engineering; ONGC v Saw Pipes and the ‘patent illegality’ saga; the stamping war that ran from NN Global to In re Interplay; and the arbitrability and group-of-companies rulings of Vidya Drolia and Cox & Kings. For statutory grounding, read alongside the Arbitration and Conciliation Act hub.
Why case law dominates Indian arbitration
The 1996 Act replaced a fragmented regime (the Arbitration Act, 1940 for domestic awards plus separate statutes for foreign awards) with a single UNCITRAL Model Law-based code. The drafting philosophy was minimal court intervention: party autonomy, kompetenz-kompetenz, and finality of awards. But minimalist drafting leaves gaps, and Indian courts filled them aggressively in the first two decades, only to be reined in by Constitution Benches and successive amendments thereafter.
The result is a body of doctrine that oscillates between two poles — expansive judicial review and pro-enforcement restraint. Every landmark below should be read as a move in that tug-of-war. To understand the foundational vocabulary these judgments deploy, see Definitions — Arbitration, Arbitral Tribunal, Court and the Introduction to the Act.
A useful way to organise the cases for an answer script is by the section they interpret. Bhatia and BALCO turn on Section 2(2) (territorial scope of Part I). Patel Engineering interprets Section 11 (appointment). Renusagar, Saw Pipes and Shri Lal Mahal turn on the meaning of ‘public policy’ under Sections 34 and 48. Bharat Broadband applies Section 12(5) and the Seventh Schedule. Vidya Drolia concerns arbitrability under Sections 8 and 11. NN Global and In re Interplay sit at the intersection of Section 11 and the Stamp Act, while Cox & Kings interprets ‘parties’ under Sections 2(1)(h) and 7. Mapping each judgment to its anchoring provision is the fastest route to a structured answer.
Bhatia International v Bulk Trading: Part I goes global
In Bhatia International v Bulk Trading S.A., (2002) 4 SCC 105 (AIR 2002 SC 1432), a three-Judge Bench confronted a structural ambiguity. Section 2(2) says Part I ‘applies where the place of arbitration is in India’ — but unlike the Model Law, the Indian provision omitted the word ‘only’. Reading the Act holistically, the Court held that Part I applies to all arbitrations, including international commercial arbitrations seated outside India, unless the parties expressly or impliedly excluded all or any of its provisions.
The practical effect was that Indian courts could grant interim relief under Section 9 even for foreign-seated arbitrations. The intention was protective — to fill a perceived gap where a party with assets in India might otherwise be remediless — but the doctrine produced years of forum-shopping and unwelcome Indian curial interference in foreign-seated proceedings. Bhatia dominated the landscape for a decade until it was decisively overruled.
The reasoning that did the most damage came in Venture Global Engineering v Satyam Computer Services Ltd., (2008) 4 SCC 190, which read Bhatia to its logical extreme: it allowed a foreign award rendered in a London-seated arbitration to be challenged in an Indian court under Section 34, on the footing that Part I had not been expressly excluded. This is precisely the kind of double-control that the seat theory is designed to prevent — a foreign award being set aside by a court that is not the supervisory court of the seat — and it crystallised the case for reform that BALCO would answer.
BALCO: the territoriality reset
Bharat Aluminium Co. v Kaiser Aluminium Technical Services Inc., (2012) 9 SCC 552 — universally called BALCO — is the most important Constitution Bench (five Judges) decision on the territorial reach of the Act. The dispute arose from a contract between an Indian company (BALCO) and a US company (Kaiser), with the arbitral seat in London. Overruling Bhatia International, the Court held that Part I of the Act applies only to arbitrations seated in India. Where the seat is abroad, Part I — including Section 9 interim relief and Section 34 set-aside — has no application.
The judgment realigned Indian law with the international principle of territoriality, treating the seat of arbitration as the centre of gravity that fixes the supervisory court. The Court drew the now-familiar distinction between the ‘seat’ (the juridical home of the arbitration, which determines the curial law and the supervisory court) and the ‘venue’ (a mere geographical location for hearings). It also held that a Section 9 application for interim relief would not lie before an Indian court if the seat were foreign, and that a foreign award could be resisted only at the enforcement stage under Part II, not set aside under Section 34.
Importantly, the Court made its ruling prospective: it applied only to arbitration agreements executed on or after 6 September 2012, so that contracts already drafted in the shadow of Bhatia were not disturbed. Parliament later softened the strict territorial cut by inserting a proviso to Section 2(2) through the 2015 Amendment, restoring Sections 9, 27 and 37(1)(a) in qualified form for foreign-seated international commercial arbitrations — unless the parties agree to the contrary. The seat-venue distinction itself was later refined in BGS SGS Soma JV v NHPC Ltd., (2020) 4 SCC 234, which held that naming a place as the ‘venue’ of arbitration, absent contrary indicia, is generally to be read as designating the seat. See the power of court to refer parties to arbitration for the related referral architecture.
SBP & Co v Patel Engineering: appointment as a judicial act
SBP & Co. v Patel Engineering Ltd., (2005) 8 SCC 618, a seven-Judge Bench, redefined the nature of the appointment power under Section 11. The earlier view in Konkan Railway Corpn. Ltd. v Rani Construction (P) Ltd., (2002) 2 SCC 388 had characterised the Chief Justice’s function in appointing an arbitrator as purely administrative. Patel Engineering overruled that view, holding the power to be a judicial one.
The consequence was that, while appointing an arbitrator, the Chief Justice or his designate could decide preliminary issues — whether a valid arbitration agreement exists, whether the applicant is a party to it, whether the claim is barred by limitation, and whether the conditions for exercising the power are satisfied. The Court also held that this power could be delegated only to another Judge of the same court, not to a non-judicial body. Although later legislative reform (the 2015 Amendment’s Section 11(6A)) sought to confine the court’s inquiry to the mere ‘existence’ of an arbitration agreement, Patel Engineering remains the doctrinal origin of the judicial-function debate that runs through to Vidya Drolia.
Renusagar: the narrow birth of 'public policy'
The public policy story begins before the 1996 Act. In Renusagar Power Co. Ltd. v General Electric Co., 1994 Supp (1) SCC 644 (AIR 1994 SC 860), a Constitution Bench interpreted the public policy exception under the Foreign Awards (Recognition and Enforcement) Act, 1961. Resisting enforcement of a US arbitral award, Renusagar argued contravention of Indian exchange-control law. The Court refused a merits review and held that enforcement could be refused only where the award offended (i) the fundamental policy of Indian law; (ii) the interests of India; or (iii) justice or morality.
Crucially, the Court held that a mere contravention of law is not enough — ‘something more than contravention of law’ is required. Renusagar thus set a deliberately narrow, pro-enforcement standard. The trouble began when that standard was carried over into the domestic set-aside context and then dramatically widened.
ONGC v Saw Pipes: 'patent illegality' enters the law
Oil & Natural Gas Corporation Ltd. v Saw Pipes Ltd., (2003) 5 SCC 705, is the single most consequential — and most criticised — arbitration judgment in India. Interpreting ‘public policy of India’ under Section 34, the Court added a fourth limb to the Renusagar trinity: patent illegality. An award could now be set aside if it was patently illegal, contrary to the substantive provisions of law, in violation of the Act itself, or in breach of the terms of the contract.
The Court was careful to say that the illegality must go to the root of the matter and not be a trivial one. Even so, by allowing courts to test awards against the contract and against errors of law, Saw Pipes effectively opened the door to merits review under the guise of public policy. Critics argued it undermined the finality of awards and the minimal-intervention philosophy of the Act. The expansive reading was carried still further in ONGC Ltd. v Western Geco International Ltd., (2014) 9 SCC 263, which folded into ‘fundamental policy of Indian law’ the duties of a judicial mind, of acting in accordance with natural justice, and of Wednesbury reasonableness — widening the set-aside net even more.
The ground was eventually codified and confined by the 2015 Amendment, which inserted Explanation 2 to Section 34(2)(b) and a new Section 34(2A): patent illegality survives only for purely domestic (non-international-commercial) awards, cannot be invoked for an erroneous application of law or for reappreciation of evidence, and is unavailable against foreign awards. The Supreme Court applied this narrowed regime in Ssangyong Engineering & Construction Co. Ltd. v NHAI, (2019) 15 SCC 131, which held that the post-2015 ‘fundamental policy of Indian law’ is confined to its Renusagar sense and that the wider Western Geco approach no longer survives. The set-aside framework is treated in detail in the recourse-against-award materials on the hub.
Shri Lal Mahal: walling off foreign awards
If Saw Pipes expanded review, Shri Lal Mahal Ltd. v Progetto Grano Spa, (2014) 2 SCC 433 (decided 3 July 2013), restored the wall around foreign awards. The Court held that the expanded ‘patent illegality’ standard of Saw Pipes has no application to the enforcement of foreign awards under Section 48. Public policy in that context reverts to the narrow Renusagar test, and Section 48 does not permit a review of the foreign award on its merits.
In so holding, the Court expressly overruled Phulchand Exports Ltd. v O.O.O. Patriot, (2011) 10 SCC 300, which had wrongly imported Saw Pipes into the foreign-award enforcement context. Shri Lal Mahal reaffirmed India’s pro-enforcement stance under the New York Convention and is the case to cite for the proposition that domestic set-aside standards and foreign-award enforcement standards are not the same.
Bharat Broadband and Section 12(5): ineligibility is fatal
Arbitrator impartiality moved from soft norm to hard rule after the 2015 Amendment introduced the Fifth and Seventh Schedules (drawn from the IBA Guidelines on Conflicts of Interest) and Section 12(5). Section 12(5) makes a person whose relationship with the parties, counsel, or subject-matter falls within the Seventh Schedule ineligible to act as arbitrator, notwithstanding any prior agreement — subject only to an express written waiver after disputes arise.
In Bharat Broadband Network Ltd. v United Telecoms Ltd., (2019) 5 SCC 755, the Supreme Court held that an appointment made by a person who is himself ineligible under Section 12(5) is void ab initio, and that the ineligibility creates a de jure inability to act that can only be cured by an express written waiver. This built on TRF Ltd. v Energo Engineering Projects Ltd., (2017) 8 SCC 377 (an ineligible person cannot nominate an arbitrator) and was extended in Perkins Eastman Architects DPC v HSCC (India) Ltd., (2020) 20 SCC 760, which struck down unilateral appointments by an interested party. The combined effect is that institutionalised one-sided appointment clauses are now largely unenforceable. See Waiver of Right to Object for the distinct Section 4 waiver doctrine.
Vidya Drolia: a fourfold test for arbitrability
Which disputes can be arbitrated at all? In Vidya Drolia v Durga Trading Corporation, (2021) 2 SCC 1, a three-Judge Bench laid down a structured fourfold test for non-arbitrability. A dispute is non-arbitrable when: (i) it relates to actions in rem not amenable to subordinate in personam determination; (ii) it affects third-party rights, has erga omnes effect, and requires centralised adjudication; (iii) it concerns inalienable sovereign or public-interest functions of the State; or (iv) the subject-matter is expressly or impliedly non-arbitrable under a statute.
Applying this, the Court held that landlord-tenant disputes under the Transfer of Property Act are arbitrable (overruling Himangni Enterprises v Kamaljeet Singh Ahluwalia, (2017) 10 SCC 706), while disputes barred by special tribunals or involving rights in rem — criminal, matrimonial, insolvency, testamentary — are not. Vidya Drolia also clarified the standard of court scrutiny at the Section 8 and Section 11 stage: the court applies a prima facie ‘eye of the needle’ test and leaves substantive arbitrability to the tribunal save in cases of manifest non-arbitrability. The Court memorably described this as a limited review — the referral court is a gatekeeper, not an adjudicator, and should refer the parties unless it is plain and obvious that no valid arbitration agreement exists or the claim is ex facie non-arbitrable.
On fraud — a recurring examination favourite — Vidya Drolia approved the position in A. Ayyasamy v A. Paramasivam, (2016) 10 SCC 386 and Avitel Post Studioz Ltd. v HSBC PI Holdings (Mauritius) Ltd., (2021) 4 SCC 713, holding that mere allegations of fraud do not oust arbitration; only serious fraud that permeates the entire contract, vitiates the arbitration clause itself, or has a public-law dimension is non-arbitrable. This buried the older, broader rule in N. Radhakrishnan v Maestro Engineers, (2010) 1 SCC 72.
NN Global: the unstamped-agreement detour
The stamping controversy asked a deceptively narrow question: can a court refer parties to arbitration when the underlying contract is unstamped or insufficiently stamped under the Indian Stamp Act, 1899? In N.N. Global Mercantile (P) Ltd. v Indo Unique Flame Ltd., a three-Judge Bench in 2021 held that an arbitration agreement, being separable, was not rendered unenforceable merely because the substantive contract was unstamped.
That view did not survive. On a reference, a five-Judge Constitution Bench in NN Global (April 2023) held by a 3:2 majority that an unstamped instrument is not a contract in law, that the arbitration clause within it cannot be acted upon until the stamping defect is cured, and that the court at the Section 11 stage must impound the instrument. The decision was widely criticised for elevating a fiscal-revenue requirement into a barrier to arbitration and for sitting uneasily with the separability doctrine.
In re Interplay: the stamping war ends
Because of the disruption NN Global caused, a curative-petition reference sent the issue to a seven-Judge Bench. In In re Interplay between Arbitration Agreements under the Arbitration and Conciliation Act, 1996 and the Indian Stamp Act, 1899, 2023 INSC 1066 (13 December 2023), the Court unanimously overruled the five-Judge majority in NN Global.
The Court held that non-stamping or insufficient stamping is a curable defect that renders an instrument inadmissible in evidence under Section 35 of the Stamp Act but does not make it void or unenforceable. Consequently, the question of stamping is for the arbitral tribunal to decide, not the referral court. The judgment harmonised the Stamp Act with the doctrines of separability and kompetenz-kompetenz and confined the Section 11 court’s role to a prima facie examination of the existence of an arbitration agreement — consistent with the post-2015 Section 11(6A). This is now the settled law on unstamped arbitration agreements.
Cox & Kings: binding non-signatories
Can a party that never signed the arbitration agreement be bound by it? In Cox & Kings Ltd. v SAP India (P) Ltd., 2023 INSC 1051 (6 December 2023), a five-Judge Constitution Bench upheld the group of companies doctrine in Indian arbitration jurisprudence. The Court held that a non-signatory can be bound where the mutual intention of all parties to bind it can be inferred from its conduct, its involvement in negotiation and performance, the commonality of subject-matter, and the composite nature of the transaction.
The doctrine was anchored in the definition of ‘parties’ in Section 2(1)(h) read with Section 7, and the Court clarified that ‘parties’ is not confined to formal signatories. It laid down a set of factors for applying the doctrine: the mutual intention of the parties, the relationship of the non-signatory to the signatory, the commonality of subject-matter, the composite nature of the transactions, and the non-signatory’s performance of the contract. It cautioned, however, that the doctrine cannot be applied merely on the basis of corporate affiliation or a ‘single economic unit’; a genuine intention to be bound, inferred from conduct, is essential.
Cox & Kings corrected the doctrinal foundation laid in Chloro Controls (I) (P) Ltd. v Severn Trent Water Purification Inc., (2013) 1 SCC 641, which had first imported the group of companies doctrine into Indian law but had tied it to the looser ‘claiming through or under’ language of Section 8 — a phrase the Constitution Bench held was about succession and assignment, not about binding independent non-signatories. By relocating the doctrine to the consensual core of Sections 2(1)(h) and 7, the Court gave it a more principled and defensible footing while leaving the ultimate determination of who is bound to be made on the facts, ordinarily by the arbitral tribunal. The validity of an arbitration agreement and who it binds is explored further in Arbitration Agreement — Form and Validity.
Reading the arc: expansion and restraint
Lined up chronologically, these judgments tell a coherent story. Bhatia and Saw Pipes expanded judicial reach (over foreign-seated arbitrations and over the merits of awards respectively). Renusagar, BALCO, Shri Lal Mahal, In re Interplay and Cox & Kings mark the counter-current of restraint and pro-arbitration construction. Patel Engineering, Vidya Drolia and Bharat Broadband sit on the institutional questions — who appoints, what is arbitrable, and who may sit.
For exam purposes, hold three anchors in memory: the seat determines the supervisory regime (BALCO); public policy is wide for domestic set-aside but narrow for foreign enforcement, with patent illegality now statutorily confined (Saw Pipes, Shri Lal Mahal, 2015 Amendment); and the referral court performs only a prima facie gatekeeping role, leaving substantive questions of stamping, arbitrability and jurisdiction to the tribunal (In re Interplay, Vidya Drolia).
A final point worth emphasising is the close partnership between the judiciary and the legislature in this field. Where the courts over-reached — as in Saw Pipes and Western Geco — Parliament stepped in through the 2015 Amendment to recalibrate the public-policy standard; where the courts mis-stepped on stamping in NN Global, a larger bench corrected course in In re Interplay. The trajectory since 2012 has been firmly pro-arbitration: minimal curial intervention, respect for the seat, deference to tribunal competence, and a narrow public-policy filter at the enforcement stage. An examiner rewards a candidate who can not only name the cases but explain this institutional dialogue and its direction of travel. Revisit the statutory text on the Arbitration and Conciliation Act hub to see how each judgment maps onto a section.
Frequently asked questions
What did BALCO actually overrule, and from when does it apply?
Bharat Aluminium Co. v Kaiser Aluminium, (2012) 9 SCC 552, overruled Bhatia International, (2002) 4 SCC 105, holding that Part I of the Act applies only to arbitrations seated in India. It was made prospective, applying only to arbitration agreements executed on or after 6 September 2012.
Is 'patent illegality' still a ground to set aside an award after ONGC v Saw Pipes?
Yes, but in confined form. The 2015 Amendment (Section 34(2A) and Explanation 2 to Section 34(2)(b)) retained patent illegality only for purely domestic awards. It cannot be invoked for an erroneous application of law, for reappreciation of evidence, or against international commercial or foreign awards.
What is the difference in public policy review between Section 34 and Section 48?
Under Section 34 (domestic set-aside), public policy is broader and, for non-international awards, includes patent illegality. Under Section 48 (foreign-award enforcement), Shri Lal Mahal v Progetto Grano Spa, (2014) 2 SCC 433, restricted it to the narrow Renusagar test — no merits review, and no patent illegality.
Are unstamped arbitration agreements enforceable after the NN Global saga?
Yes. The seven-Judge Bench in In re Interplay, 2023 INSC 1066, overruled the five-Judge majority in NN Global (2023) and held that non-stamping is a curable defect making the instrument merely inadmissible, not void. Stamping is for the arbitral tribunal, not the referral court, to address.
What did Patel Engineering decide about the Section 11 appointment power?
SBP & Co. v Patel Engineering, (2005) 8 SCC 618 (seven Judges), held that the Chief Justice’s power to appoint an arbitrator under Section 11 is judicial, not administrative, and may decide preliminary issues such as the existence of a valid arbitration agreement. The 2015 Amendment (Section 11(6A)) later narrowed the inquiry to the agreement’s 'existence'.
Can a non-signatory be compelled to arbitrate in India?
Yes, in limited circumstances. Cox & Kings Ltd. v SAP India, 2023 INSC 1051, upheld the group of companies doctrine, binding a non-signatory where the parties’ mutual intention to bind it is shown through conduct, participation in the transaction, and a composite commercial relationship — not mere corporate affiliation.