Confidential arbitration documents cannot be used in separate proceedings: Delhi High Court

The Delhi High Court, in the case of *JPC Infrastructure and Constructions Private Limited v. Alstom Transport India Limited*, has unequivocally held that documents originating from confidential arbitral proceedings cannot be relied upon in separate arbitration proceedings. This ruling, delivered on July 6, 2026, reinforces the sanctity of the confidentiality regime enshrined in Section 42A of the Arbitration and Conciliation Act, 1996. Justice Harish Vaidyanathan Shankar clarified that the relevance of a document does not automatically grant an unrestricted right to its use, particularly when it contravenes legal obligations governing its disclosure. The decision underscores the legislative intent behind maintaining the privacy and integrity of arbitration as a dispute resolution mechanism, preventing the collateral use of sensitive information obtained from distinct arbitral processes.

The Delhi High Court has delivered a significant ruling impacting the landscape of arbitration practice in India, particularly concerning the confidentiality of arbitral proceedings. In *JPC Infrastructure and Constructions Private Limited v. Alstom Transport India Limited*, pronounced on July 6, 2026, the Court held that documents procured from one confidential arbitration cannot ordinarily be adduced as evidence or relied upon in a separate, distinct arbitration.

This judgment, rendered by Justice Harish Vaidyanathan Shankar, serves as a crucial affirmation of the confidentiality principles embedded within the Arbitration and Conciliation Act, 1996. It clarifies the boundaries of permissible evidence, emphasizing that the mere relevance of a document does not override the legal obligations surrounding its origin and disclosure. The decision is poised to have considerable implications for legal practitioners, reinforcing the need for meticulous adherence to confidentiality protocols in arbitral disputes and shaping strategies for evidence management.

The core thesis of the Court's pronouncement is that allowing the unrestricted use of confidential arbitral documents in separate proceedings would fundamentally undermine the legislative intent behind Section 42A of the Arbitration and Conciliation Act, 1996, thereby eroding the trust and privacy that are cornerstones of the arbitral process.

The principle of confidentiality is a cornerstone of arbitration, often cited as a primary reason parties opt for this mode of dispute resolution over traditional litigation. Prior to 2019, the Arbitration and Conciliation Act, 1996 (the "Act") lacked an explicit statutory provision mandating confidentiality, though it was often implied or incorporated through institutional rules or party agreements. This changed with the Arbitration and Conciliation (Amendment) Act, 2019, which introduced Section 42A into the principal Act.

Section 42A, titled "Confidentiality of information," unequivocally states that "the arbitrator, the arbitral institution and the parties to the arbitration agreement shall maintain the confidentiality of all arbitral proceedings except the award where its disclosure is necessary for the purpose of implementation and enforcement of the award." This provision embodies a non-obstante clause, signifying its overriding effect over any conflicting provisions in other laws. The legislative intent behind this insertion was to provide a clear statutory basis for confidentiality, ensuring that disputes resolved through arbitration remain private and that sensitive commercial information does not enter the public domain.

However, the scope and enforceability of Section 42A have been subjects of ongoing discussion. While it imposes a duty on specific actors, some commentators have pointed out potential gaps, such as the absence of explicit sanctions for breach, a clear definition of what constitutes "confidential information," and its limited reach to third parties not directly bound by the arbitration agreement. Despite these perceived limitations, the Supreme Court, in *Kamal Gupta v. M/S LR Builders Private Limited*, previously affirmed that Section 42A prohibits the presence of non-signatories in arbitral hearings, thereby reinforcing the privacy aspect of the proceedings.

The Delhi High Court's recent decision in *JPC Infrastructure and Constructions Private Limited v. Alstom Transport India Limited* directly addresses a critical aspect of Section 42A's application: the use of documents from one confidential arbitration in another. The dispute originated from the Eastern Dedicated Freight Corridor project, where Alstom Transport India Limited had a contract with Dedicated Freight Corridor Corporation of India Limited (DFCCIL) and subsequently subcontracted JPC Infrastructure and Constructions Private Limited. During arbitration between JPC and Alstom, JPC sought to rely on a letter exchanged between Alstom and DFCCIL, which was part of a *separate* arbitration between Alstom and DFCCIL.

The arbitral tribunal, which included former Chief Justice of India Dipak Misra, rejected the admission of this document, citing the confidentiality of the original proceedings. JPC challenged this decision under Section 34 of the Act, arguing that the document was relevant to its case. However, Justice Harish Vaidyanathan Shankar of the Delhi High Court upheld the tribunal's decision, stating that "Relevance of a document and its permissible use are distinct considerations." The Court emphasized that a party cannot claim an unrestricted right to rely on a document solely because it supports its case, irrespective of how it was obtained or the legal obligations governing its disclosure.

This ruling is significant as it provides judicial clarity on the practical implications of Section 42A. It underscores that the statutory mandate for confidentiality cannot be diluted or overridden, even by arguments of evidentiary relevance in separate proceedings. The Court's stance reinforces the idea that the integrity of the arbitral process, including its confidentiality, is paramount and that allowing such collateral use would render the statutory protection meaningless. While Section 42A itself does not explicitly detail the consequences of a breach, this judgment provides a strong judicial interpretation that prevents the evidentiary use of confidentially obtained documents, thereby acting as a deterrent against such disclosures. The decision aligns with the broader objective of arbitration to provide a private and efficient dispute resolution mechanism, free from the public scrutiny and potential misuse of information that can occur in open court proceedings.

The Delhi High Court's decision in *JPC Infrastructure and Constructions Private Limited v. Alstom Transport India Limited* marks a pivotal moment for arbitration practice in India, firmly establishing that documents from confidential arbitral proceedings are generally inadmissible in separate arbitrations. This ruling solidifies the protective ambit of Section 42A of the Arbitration and Conciliation Act, 1996, ensuring that the confidentiality inherent in arbitration is not easily circumvented. Practitioners must now be acutely aware that the principle of relevance, while fundamental to evidence, does not supersede the statutory obligation of confidentiality.

For legal professionals, this judgment necessitates a more stringent approach to evidence gathering and strategic planning in arbitration. It underscores the importance of advising clients on the strictures of confidentiality and the potential inadmissibility of documents obtained from other arbitral processes. While the ruling strengthens the confidentiality regime, practitioners should also remain mindful of the identified gaps in Section 42A, such as the lack of explicit remedies for breach and its limited application to third parties. Future developments may see further judicial interpretation or legislative amendments to address these nuances, but for now, the message from the Delhi High Court is clear: the sanctity of arbitral confidentiality must be preserved.