Introduction:

The Calcutta High Court has set aside an interim injunction restraining two individuals from circulating emails containing allegations concerning the management of a company, holding that courts must exercise exceptional caution before restricting allegedly defamatory speech at the interlocutory stage. A Division Bench comprising Justice Sabyasachi Bhattacharyya and Justice Sandip Kumar De held that the principles governing interim relief in defamation proceedings are distinct and that the well-established Bonnard Principle must be applied before an injunction is granted against allegedly defamatory statements.

The ruling came in Anil Kaushik and Anr. v. Surabh Khemani, in FMAT 220 of 2026, arising from an order passed by the City Civil Court at Calcutta on April 4, 2026. The Trial Court had restrained the appellants from sending emails to third parties who were not directly connected with the concerned business and which contained allegations against the plaintiff concerning the management of the company during his tenure.

The dispute concerned communications relating to CyberCorp Limited and Sundyne Technologies Private Limited. The emails in question, dated January 16 and January 31, 2026, contained allegations concerning purported legal violations by the plaintiff in relation to the affairs of the companies. Among other things, the communications referred to alleged misappropriation of proprietary software source codes and confidential technical material.

The plaintiff approached the Trial Court seeking protection against what he alleged were defamatory communications. The City Civil Court granted an interim injunction, although it expressly clarified that the order would not prevent the defendants from making genuine complaints concerning illegal activities before competent statutory authorities.

The defendants challenged the restraint before the Division Bench of the Calcutta High Court. Their central contention was that the Trial Court had failed to apply the special principles governing interlocutory relief in defamation cases. They argued that the truthfulness of the allegations could not be decided at the preliminary stage and that, in such circumstances, an injunction restraining publication or communication was impermissible unless the defence of justification by truth was certain to fail at trial.

The Division Bench accepted this contention. It held that defamation actions occupy a special position when courts are asked to grant interim injunctions because such orders directly affect freedom of speech and expression. While the ordinary principles governing interim relief require consideration of a prima facie case, balance of convenience and irreparable injury, a defamation action attracts an additional safeguard in the form of the Bonnard Principle.

The principle originates in the English decisions of Bonnard v. Perryman and Fraser v. Evans, and has subsequently been followed by Indian courts. It rests upon the idea that courts should be extremely reluctant to restrain allegedly defamatory speech before trial, particularly where the defendant may ultimately establish that the impugned statements are substantially true.

The High Court emphasised that unless the Court can conclude that the defence of justification by truth is unavailable and is bound to fail at trial, an interlocutory injunction should ordinarily not be granted. The Court found that the Trial Court had itself acknowledged that it could not determine at the interlocutory stage whether the allegations contained in the emails were genuine or true. Having reached that conclusion, however, it nevertheless restrained the defendants from making “illegal allegations”.

According to the Division Bench, this reasoning was internally inconsistent. If the Court could not determine whether the allegations were true or legally justified, it could not simultaneously conclude that they were sufficiently unlawful or defamatory to warrant prior restraint.

The High Court also considered the wording of the injunction itself. The Trial Court had prohibited communications to “third parties” who were not “directly involved” in the business. The Division Bench found these expressions insufficiently precise because neither the plaint nor the application clearly identified the persons who would fall within those categories.

The High Court therefore concluded that the injunction was effectively blanket in nature and lacked the precision required of an order restricting speech. It allowed the appeal and set aside the Trial Court’s order, while making it clear that its observations were tentative and would not affect the final adjudication of the defamation suit.

The judgment thus reaffirms two important principles. First, courts must exercise particular restraint when asked to prohibit allegedly defamatory speech before trial. Second, an injunction must be clear and capable of precise enforcement; vague expressions cannot be used to impose a broad restriction upon communication.

Arguments of the Parties:

The appellants, Anil Kaushik and another, challenged the interim injunction primarily on the ground that the Trial Court had failed to apply the special legal principles applicable to defamation cases. Their argument was that the impugned emails contained allegations concerning corporate affairs and alleged legal violations, and that the truth or otherwise of those allegations was a matter requiring evidence and adjudication at trial.

The appellants contended that the Trial Court had itself recognised the difficulty of determining the truthfulness of the allegations at the interlocutory stage. Once the Court accepted that the allegations could not yet be conclusively characterised as false, it could not lawfully restrain the appellants from communicating them merely by describing them as “illegal allegations”.

The appellants relied upon the Bonnard Principle, which represents a significant limitation on the ordinary principles governing interim injunctions in defamation proceedings. Their submission was that the Court must be satisfied to a particularly high degree that the defence of justification by truth is bound to fail before restraining allegedly defamatory material prior to trial.

They argued that the principle exists because an interim injunction in a defamation action can effectively determine the dispute before evidence is led. If a statement that is ultimately proved to be true is restrained during the pendency of the suit, the defendant’s right to communicate truthful information may be seriously and unnecessarily curtailed.

The appellants further submitted that the communications were made in the context of disputes concerning the management and affairs of the companies. The emails did not exist in isolation but referred to alleged corporate and criminal law violations. One of the communications referred to legal notices and expressly stated that it was being issued without prejudice to the rights, remedies and proceedings available in law and equity.

The subsequent email also referred to and attached an actual legal notice issued on the same date, substantially reiterating the contents of that notice. According to the appellants, these circumstances demonstrated that the communications were part of an ongoing legal and corporate dispute rather than an arbitrary campaign to malign the plaintiff.

The appellants also challenged the breadth and vagueness of the injunction. The Trial Court had restrained them from sending emails to “third parties” who were not “directly involved” with the concerned business. The appellants argued that these expressions had no clearly defined boundaries. It was unclear who would qualify as a third party, who could be considered directly involved with the business and who would fall outside the scope of the restraint.

Such uncertainty, they submitted, could expose the appellants to allegations of contempt even when they were acting in good faith and communicating with individuals whose connection to the business might reasonably be disputed.

The appellants therefore sought setting aside of the injunction on the ground that it was contrary to the law governing prior restraint in defamation cases, was unsupported by a finding that the allegations were demonstrably false and was too vague to be judicially enforceable.

The respondent-plaintiff, on the other hand, sought to sustain the interim protection granted by the Trial Court. His case was that the communications contained serious allegations concerning his conduct in relation to the management of the companies and were damaging to his reputation.

The allegations included references to purported legal infractions and alleged misappropriation of proprietary software source codes and confidential technical material. The plaintiff’s position was that the circulation of such allegations to persons who were not directly connected with the business could cause continuing reputational harm and therefore warranted interim protection.

The respondent could also rely upon the ordinary principles applicable to interim injunctions. Where a plaintiff demonstrates a prima facie case, the balance of convenience and the possibility of irreparable injury, courts possess jurisdiction to grant temporary relief to prevent continuing harm pending trial.

The Trial Court had apparently attempted to strike a balance by allowing the defendants to make genuine complaints before competent statutory authorities while restraining them from disseminating the allegations more broadly to persons unconnected with the business.

The respondent’s position therefore reflected the concern that freedom of speech cannot become a licence to circulate unverified and potentially damaging accusations about an individual. Where communications allegedly cross the line from legitimate complaint into reputational injury, the affected person may seek judicial protection.

The respondent could also contend that the emails were not merely confidential communications made to a competent authority but were sent to third parties. In his submission, circulation of allegations beyond persons directly involved in the corporate dispute could magnify the reputational consequences and justify preventive relief.

The dispute before the Division Bench consequently involved a delicate balance between the plaintiff’s interest in protecting reputation and the defendants’ right to communicate allegations which they claimed were connected with genuine legal and corporate disputes.

The High Court was therefore required to determine whether the ordinary three-part test for interim injunctions was sufficient or whether the special rule applicable to defamation cases imposed a higher threshold. It ultimately concluded that the Bonnard Principle had to be squarely considered and that the Trial Court had failed to apply it correctly.

Court’s Judgment:

The Division Bench of the Calcutta High Court allowed the appeal and set aside the City Civil Court’s order dated April 4, 2026. The Court’s decision was founded principally on the special approach required when an interlocutory injunction is sought to restrain allegedly defamatory speech.

The Bench began by recognising that defamation suits occupy a distinct position in the law governing interim injunctions. Ordinarily, a court considering temporary relief examines whether the plaintiff has established a prima facie case, whether the balance of convenience lies in favour of granting relief and whether refusal of relief would cause irreparable injury.

However, in a defamation action, those three tests do not operate in isolation. The Court held that the Bonnard Principle must also be taken into account.

The principle derives from the English decision in Bonnard v. Perryman, which established a strong judicial reluctance to restrain allegedly defamatory publications before the truth of the statements has been determined. The approach was also recognised in Fraser v. Evans and has subsequently been adopted by Indian courts.

The rationale is closely connected with freedom of speech. If a court restrains a statement before trial and the defendant ultimately proves that the statement was true, the interim order would have prevented communication of material that the law actually protects. The harm caused by such prior restraint may therefore be difficult to undo.

The Division Bench consequently held that an interim injunction in a defamation suit should ordinarily not be granted unless the Court is satisfied that the defence of justification by truth is certain to fail at trial.

The Court explained the principle by observing that until an alleged libel is shown to be untrue, it cannot conclusively be said that a legal right has been infringed. The possibility that the defendant may establish truth at trial means that the court must exercise considerable restraint before suppressing the statement at the interlocutory stage.

The Bench observed that the protection of free speech constitutes a powerful reason for courts to act “most cautiously and warily” when dealing with applications seeking restraint of allegedly defamatory material.

The Court then examined the reasoning adopted by the Trial Court and found a significant contradiction. The City Civil Court had expressly observed that, at the interlocutory stage, it was not possible to determine whether the allegations contained in the emails were genuine. It had recognised that the truthfulness of the allegations would have to be tested at trial.

Despite this finding, the Trial Court proceeded to restrain the defendants from raising “illegal allegations”.

The Division Bench found this approach legally unsustainable. If the Trial Court was itself unable to determine whether the allegations were true or false, it could not at the same time conclude that they were allegations whose publication was sufficiently unlawful to warrant an injunction.

The High Court observed that because the Trial Court remained uncertain about the legality and truthfulness of the allegations, there was no basis for concluding that the defence of justification was certain to fail. The essential threshold required under the Bonnard Principle had therefore not been satisfied.

The Court next examined the actual contents and context of the communications. The emails dated January 16 and January 31, 2026 concerned alleged legal infractions relating to CyberCorp Limited and Sundyne Technologies Private Limited.

The first email referred to legal notices and expressly stated that it was being sent without prejudice to the rights and remedies available to the parties in law and equity. The subsequent communication referred to and attached an actual legal notice issued on the same date and substantially reproduced its contents.

The Bench acknowledged that the language used in the emails was strong. The communications contained allegations concerning, among other matters, the alleged misappropriation of proprietary software source codes and confidential technical information.

However, the Court held that the use of strong language could not, by itself, justify an interim restraint where the allegations arose in the context of asserted violations of corporate and criminal law. Whether the plaintiff had actually committed the alleged violations, and whether the defendants could establish the truth of their allegations, were matters that would ultimately have to be determined by the competent legal forums.

The existence of pending proceedings concerning oppression and mismanagement before the National Company Law Tribunal was also relevant to the context in which the communications had been made. The dispute was therefore not merely a private exchange of personal accusations but involved ongoing corporate proceedings and allegations relating to the management of companies.

The High Court did not make any finding that the allegations contained in the emails were true. Equally, it did not find that they were false. Its point was that such questions could not properly be conclusively decided while considering a temporary injunction.

This distinction is central to the Bonnard Principle. The purpose of the interlocutory stage is not to conduct a premature trial on the truth or falsity of the allegedly defamatory statement. Unless the material before the Court demonstrates that the defence of justification is plainly unavailable and bound to fail, prior restraint should ordinarily be avoided.

The Division Bench then considered another defect in the Trial Court’s order: its lack of precision.

The injunction prohibited the appellants from sending emails to “third parties” who were not “directly involved” with the concerned business. The High Court found that the record did not clearly establish who these persons were. Neither the plaint nor the injunction application had sufficiently identified the capacities of the persons said to be unconnected with CyberCorp Limited.

This created a serious problem of enforceability. The meaning of “third party” could potentially be broad, while the expression “directly involved” was inherently dependent upon interpretation. What one party regarded as a person directly involved in the business might be viewed differently by the other.

An injunction, particularly one backed by the possibility of contempt proceedings, must ordinarily be sufficiently clear for the parties to understand exactly what conduct is prohibited. A vague order can create uncertainty and expose a party to unnecessary litigation over whether a particular act falls within its scope.

The High Court consequently regarded the restraint as effectively blanket in character. It was not sufficiently tailored to the specific conduct complained of and did not clearly identify the communications or recipients that were prohibited.

This aspect of the judgment reinforces another important procedural principle: interim relief must be proportionate and precise. Courts may restrain specific unlawful conduct where the legal threshold is satisfied, but an order restricting communication should not be framed so broadly that it leaves the parties to determine its scope through their own subjective perceptions.

The Court also took note of the Trial Court’s exception permitting genuine complaints to be made before competent statutory authorities. That exception demonstrated that even the Trial Court recognised the legitimacy of raising concerns through appropriate legal channels.

Nevertheless, the Division Bench found that the distinction between permissible complaints and prohibited communications had not been sufficiently defined in the injunction itself.

The High Court ultimately held that the Trial Court had misconstrued the parameters applicable to temporary injunctions in defamation proceedings. The ordinary tests for interim relief had to be supplemented by the Bonnard Principle, particularly because the proposed order directly affected freedom of expression.

The Court reiterated the principle that until the alleged libel is shown to be untrue, it is difficult to conclude that a legal right has necessarily been violated. Where the defendant raises a plausible defence of justification and the truth of the allegation requires evidence, the matter should ordinarily proceed to trial rather than being conclusively suppressed through interlocutory relief.

The judgment therefore does not mean that courts can never grant interim injunctions in defamation matters. Rather, it establishes that the threshold is exceptionally high. Where it is demonstrated that the alleged defamatory statement is plainly false and the defence of truth is clearly unavailable, an injunction may still be justified. But where truth remains a genuine issue requiring adjudication, the court must exerise restraint.

The Division Bench also clarified the limited n