Staying DSA Investigations: Speculative Compliance Burdens Do Not Outweigh Effective Enforcement

1. Introduction

This judgment concerns whether a regulatory investigation under the Digital Services Act should be suspended while its legality is challenged by judicial review. X Internet Unlimited Company sought a stay of an investigation commenced by Coimisiún na Meán into suspected failures concerning the platform’s internal complaint-handling system under Article 20 of Regulation (EU) 2022/2065.

The High Court refused the stay. Applying established Irish public-law principles, it held that the public interest in allowing a presumptively valid investigation to proceed substantially outweighed the applicant’s insufficiently particularised evidence of prospective harm.

The decision does not determine the substantive meaning of Article 20 or establish that X breached it. Its significance lies in applying the established stay jurisdiction to an early-stage DSA investigation: an arguable jurisdictional challenge, coupled with general concerns about expense, compulsory powers and confidentiality, does not automatically justify suspending regulatory scrutiny.

2. Background and the Disputed Investigation

The parties and regulatory framework

The applicant is the Irish company providing the X service to users in the European Union. The platform is an online platform under Article 3(i) of the DSA and was designated a very large online platform by the European Commission in April 2023.

Coimisiún na Meán is Ireland’s Digital Services Coordinator. In relation to X, it acts as the Digital Services Coordinator of Establishment, with supervisory responsibilities extending beyond Irish users. Complaints received by coordinators in other Member States may be transmitted to it under Article 53.

X Holdings Corp. and an individual associated with the group’s ownership and control were notice parties. Their involvement arose from the regulator’s intention to identify the legal entities forming the economic unit providing the service.

The suspected Article 20 failures

Article 20 requires qualifying online platforms to provide an effective internal complaint-handling system for specified content-moderation decisions. Article 20(3) requires that system to be accessible, user-friendly and capable of facilitating sufficiently precise and substantiated complaints.

The regulator suspected that users who unsuccessfully reported content as incompatible with X’s terms and conditions lacked an effective complaint or appeal mechanism. It also questioned whether users received sufficient information about decisions and how to challenge them.

The investigation drew on information from HateAid, an earlier user complaint, responses to information requests and an internal supervisory assessment. An authorised person issued the investigative direction on 24 October 2025. A notice of commencement followed on 12 November 2025.

The investigation was also directed to establish the precise scope of the service provider: namely, which legal entities formed the relevant economic unit. The applicant challenged that aspect alongside the alleged Article 20 deficiencies.

The judicial review grounds

Leave to seek judicial review was granted on 8 December 2025. The applicant sought orders quashing the direction and notice, prohibition of the investigation and, if necessary, a preliminary reference to the Court of Justice of the European Union under Article 267 TFEU.

The ten substantive grounds can be grouped as follows:

These remained allegations for substantive determination. The regulator accepted an arguable case only for the purposes of the stay application.

3. Summary of the Decision

The court concluded that the greatest risk of injustice lay in granting a stay, not refusing it. Its principal findings were:

• The direction and notice were prima facie valid and deserved significant weight pending determination of their legality.
• Effective DSA enforcement, including the protection of users across the EU, carried very significant public-interest weight.
• The applicant’s evidence did not establish that participation in the investigation would cause irreparable prejudice or damage.
• Possible future coercive measures, sanctions and criminal consequences were largely speculative at this preliminary stage.
• Statutory safeguards and the obligation to act consistently with constitutional justice reduced the demonstrated risk of unfairness.
• The proposed duration of a stay was too uncertain to weigh meaningfully in either direction.

The application was refused and the existing interim stay lapsed. No finding of infringement, liability or substantive validity followed from that refusal.

4. Precedents and the Governing Legal Approach

4.1 The controlling public-law test

Okunade v Minister for Justice, Equality and Law Reform [2012] 3 IR 152 supplied the agreed governing test. The court must first identify an arguable case. If one exists, it must determine where the greatest risk of injustice lies, giving appropriate weight to:

1. The orderly implementation of measures that are prima facie valid.
2. The public interest in the operation of the relevant statutory scheme.
3. Any case-specific factors increasing the public harm of suspension.
4. The consequences for the applicant if compliance is required with a measure later found unlawful.

Damages may be relevant, as may the apparent strength of the challenge where evaluating it does not require detailed factual investigation or resolution of complex law. Importantly, an applicant has no automatic entitlement to a stay.

The judgment particularly relied on the principle that “regulators are entitled to regulate”. That principle does not immunise regulatory decisions from review. It recognises that judicial review must not routinely disable the exercise of statutory authority before unlawfulness has been established.

4.2 Flexibility does not displace public-interest weighting

In Merck Sharp & Dohme v Clonmel Healthcare [2020] 2 IR 1, also identified in the judgment by its neutral citation [2019] IESC 65, the Supreme Court emphasised a flexible, practical assessment of interlocutory relief. Adequacy of damages forms part of the overall balance rather than necessarily operating as a rigid preliminary hurdle.

Dunne J. rejected the suggestion that this modified the Okunade approach or reduced the importance of public-interest considerations. The decision itself recognised the weight attaching to legal measures that remain effective unless and until set aside.

Its discussion of damages was nevertheless important: an award can be theoretically possible yet too uncertain or incomplete to do justice. Equally, demonstrating some non-compensable harm does not inevitably determine the balance. Other interests may outweigh it.

MD v Board of Management of a Secondary School [2024] IESC 11 reinforced that reconciliation. Collins J. explained that stays affecting presumptively valid public-law measures must follow careful identification and weighing of all relevant interests, rather than routine suspension. Public-interest considerations arise even where a measure directly affects only one person or a small group.

4.3 Cases demonstrating concrete, difficult-to-reverse harm

The applicant relied on several decisions in which interim protection prevented consequences that damages might not adequately repair. The court distinguished them by reference to their evidence and circumstances.

Business destruction and goodwill

In Betty Martin Financial Services Ltd v EBS DAC [2019] IECA 327, termination of tied-agency arrangements threatened the claimant’s entire existing business. The evidence addressed the loss of premises, transfer of staff, customer relationships, goodwill and a substantial family investment in the business.

Restoration after trial would not necessarily reverse those changes. The case therefore illustrated both the flexibility of interlocutory relief and the importance of identifying interests extending beyond straightforward financial loss. It differed sharply from general assertions that participation in an investigation would consume resources.

Irreversible procurement arrangements

Word Perfect Translation Services Limited v Minister for Public Expenditure and Reform [2022] 3 IR 764 concerned a procurement challenge. Allowing framework agreements to be concluded risked creating arrangements that could not subsequently be reversed. Damages were also unusually difficult to assess because the challenge concerned features of the competition itself, requiring speculation about how a differently structured competition would have operated.

Its relevance was not simply that damages were unavailable or inconvenient. It demonstrated a concrete combination of irreversible action and highly uncertain compensation. In discussing that decision, the judgment also recorded its reliance on F.P. McCann Limited v Department for Regional Development [2020] NIQB 51 as illustrating the real difficulties of assessing procurement damages. That authority operated indirectly through the procurement comparison; it supplied no separate DSA rule.

Completed regulatory decisions and extensive operational evidence

TikTok Technology Limited v Data Protection Commission [2025] IEHC 619 concerned a completed GDPR inquiry, findings of infringement, substantial administrative fines, and orders requiring suspension of data transfers and corrective action.

Unlike the present case, the threatened operational consequences flowed from existing orders. Extensive internal and expert evidence addressed expenditure running into billions of euros, relocation of employees, loss of expertise, deterioration of the service and substantial lost profits.

The earlier court considered the scale and difficulty of quantifying the losses, alongside the limited prospect of recovering them under the applicable principles governing State liability for breaches of EU law. Its conditional stay illustrated why financial harm can justify interim protection when demonstrated with sufficient substance.

Dunne J. contrasted that evidential record with the applicant’s single financial-director account, which lacked comparable detail and specificity. The distinction was both procedural and evidential: the beginning of an investigation is not equivalent to implementing final corrective orders.

4.4 The importance of timely DSA implementation

In Amazon Services Europe v European Commission (Case C-639/23 P(R), Order of 27 March 2024), the Vice-President of the Court of Justice stressed the importance of the DSA’s objectives and the risk that delayed application could allow an online environment threatening Charter rights to persist.

Dunne J. used those observations to support the weight attaching to effective implementation. They were not treated as resolving the interpretation of Article 20 or replacing the Irish stay test with a different EU-law test.

4.5 Constitutional justice within the statutory process

Curtin v Dáil Éireann [2006] 2 IR 556 and Dellway Investment Ltd and Ors v NAMA and Ors [2011] 4 IR 1 supported the presumption that statutory functions will be exercised consistently with constitutional justice.

Together with the express statutory safeguards, this reduced the force of anticipated unfairness as a reason to halt the investigation. It did not establish that procedural defects could never arise or that the applicant’s substantive fair-procedures grounds were unfounded.

4.6 Later judgments and related proceedings

Two High Court decisions delivered after argument—X Internet Unlimited Company v Coimisiún na Meán [2026] IEHC 127 and ByteDance Ltd v Coimisiún na Meán [2026] IEHC 196—were described as applications of the same fact-sensitive Okunade approach. Dunne J. expressly based his conclusion on the evidence in this case, not on the outcomes of those proceedings.

The Supreme Court subsequently delivered TikTok Technology Ltd & Ors v Data Protection Commission [2026] IESC 27. As the parties had not made supplemental submissions about it, Dunne J. stated that he had decided the application without reference to that judgment. This decision therefore should not be presented as interpreting or applying that later Supreme Court authority.

The notice parties’ challenge, Elon Musk & X Holdings Corp v Coimisiún na Meán, Record No. 2025/1836 JR, was addressed separately. Its relevance here concerned overlapping provider-identity issues and uncertainty about a possible preliminary reference, rather than a precedent deciding the applicant’s entitlement to a stay.

5. Analysis of the Court’s Reasoning

5.1 Alleged jurisdictional error did not remove presumptive validity

The applicant argued that there could be no public interest in allowing an unlawful investigation to proceed. The court’s answer distinguished alleged unlawfulness from established unlawfulness.

The direction and notice remained prima facie valid. The underlying DSA and domestic statutory provisions were not challenged. An arguable allegation that the regulator had exceeded those powers did not eliminate the weight due to orderly implementation.

Otherwise, describing a challenge as “jurisdictional” could effectively predetermine the interim outcome. The court instead assessed the competing risks while leaving the jurisdictional questions for substantive adjudication.

5.2 The public interest was connected to the investigation’s actual function

The court gave very significant weight to the role of complaint mechanisms in protecting users and supporting transparent moderation. Such mechanisms can protect expression against wrongful restriction while also enabling challenges to decisions leaving harmful content available.

The applicant objected that references to terrorism, child exploitation and similar material exaggerated an investigation concerned with terms-and-conditions reports rather than illegal-content notices. The court nevertheless accepted, for interim purposes, that a potentially deficient complaint mechanism could affect several categories of seriously harmful content, not merely the hate and violent speech underlying particular examples.

This was an assessment of the consequences of delayed investigation, not a final ruling that every report about such content attracts an Article 20 appeal right.

The platform’s scale amplified the potential consequences: the evidence referred to approximately 102 million average monthly active EU recipients during April–June 2025. The regulator’s cross-border responsibilities also meant that delay could affect users and coordinating authorities throughout the EU.

5.3 Ordinary compliance burdens required specific evidence of exceptional impact

The applicant anticipated substantial legal, engineering, technical, executive and consultancy commitments. However, its evidence did not identify the likely scale of those commitments or explain their significance relative to its resources.

The court regarded engagement with regulatory investigations as an ordinary incident of conducting business in a regulated sector. That observation did not make compliance costs legally irrelevant. It explained why general assertions about expense and diversion of staff were insufficient to demonstrate serious injustice in this case.

Importantly, the court did not make irreparable harm an inflexible threshold. It also concluded that, even if some irreparable prejudice arose, it would not outweigh the public-interest considerations.

5.4 Potential future powers were not equivalent to existing adverse measures

At the time of the application, the authorised officer had made no findings or interim directions and had neither exercised nor threatened the coercive powers emphasised by the applicant.

Possible compulsory interviews, inspections, interim measures, financial sanctions and criminal consequences therefore remained contingent. The fact that commencing an investigation creates a statutory gateway to later powers did not itself establish a real risk of irreparable harm.

The court similarly found no evidence that the applicant intended to obstruct the investigation or provide false information. The theoretical prospect of criminal liability for non-compliance did not demonstrate present prejudice requiring suspension.

5.5 Procedural protections materially reduced the demonstrated risk

The court examined the investigative and decision-making sequence under Part 8B of the Broadcasting Act 2009:

1. Inquiry subjects may respond to the commencement notice within the prescribed period; that initial response is not mandatory.
2. The authorised officer may exercise statutory information-gathering powers, including requests for documents and information.
3. Section 139ZK provides protection against self-incrimination and privileges and immunities equivalent to those of a High Court witness.
4. The draft investigation report and supporting information must be supplied to inquiry subjects, who may make submissions.
5. The authorised officer must consider those submissions and cannot recommend or express an opinion on imposing an administrative financial sanction.
6. The regulator separately determines whether a contravention occurred, with further opportunities for submissions and, where necessary for fairness, an oral hearing.
7. Additional submissions are permitted concerning any proposed financial sanction.
8. Appeal and court-confirmation procedures provide further judicial oversight.

The court also noted the availability of commitment agreements addressing compliance concerns. These safeguards, together with the presumption of constitutionally compliant administration, weakened the applicant’s case that allowing the process to continue would itself create irreparable unfairness.

This reasoning did not establish that later safeguards can cure an investigation commenced without jurisdiction. Rather, it assessed the likelihood and seriousness of interim harm while that foundational dispute remained unresolved.

5.6 Confidentiality and existing safety mechanisms

The court accepted evidence that the regulator protects confidential documents. The applicant had not demonstrated that disclosure would produce irreparable injury notwithstanding those arrangements and the relevant procedural protections.

Nor did the applicant explain how the investigation itself would disrupt its existing mechanisms for detecting and addressing child sexual exploitation. Its view that those mechanisms were adequate could not substitute for the statutory examination of compliance.

The distinction matters: a future finding might require operational changes, but gathering information to determine whether such changes are necessary does not automatically cause the same disruption.

5.7 Chronology, expedition and the proposed status quo

The applicant argued that the regulator’s earlier pace undermined its claim of urgency. The court accepted the explanation that preparatory work, voluntary information exchanges and internal assessment had occurred, and that care was appropriate for the regulator’s first investigation of this kind. It found no undue delay undermining the asserted public interest.

The applicant also offered expedition. By the time of judgment, the substantive proceedings had been heard and judgment reserved. Nevertheless, possible Article 267 references and overlap with the notice parties’ proceedings made the duration of any stay uncertain. The court therefore treated duration as a factor incapable of meaningful weighting, rather than assuming either a short or prolonged suspension.

The parties advanced competing descriptions of the status quo: the applicant identified the pre-investigation position; the regulator identified the investigation already underway. The judgment did not resolve the application through either label. Its decisive reasoning remained the comparative risk of injustice.

6. Impact and Limits

Practical implications for regulated platforms

Applicants seeking to stop early-stage investigations will need evidence identifying the actual threatened prejudice: likely costs, operational effects, affected systems or personnel, confidentiality risks and the reasons existing protections are insufficient. Where relevant, that evidence should distinguish ordinary regulatory engagement from consequences that cannot realistically be reversed.

The judgment also shows why authorities concerning the destruction of a business, irreversible procurement agreements or implementation of final corrective orders cannot simply be transposed to the initiation of an inquiry.

Implications for regulators

The decision supports the practical effectiveness of the DSA’s supervisory framework. Judicial review does not automatically suspend information gathering, and EU-wide regulatory responsibilities may substantially increase the public-interest weight against a stay.

Nevertheless, the regulator succeeded through a case-specific evidential explanation of the investigation’s importance, chronology and safeguards. The judgment does not confer a general exemption from interim judicial control.

What remains undecided

• Whether Article 20 gives the disputed appeal rights to reporters alleging only breaches of platform terms.
• Whether the direction and notice sufficiently defined and particularised the suspected contraventions.
• Whether the requisite statutory suspicion existed for every investigated matter.
• Whether the earlier complaint was lawfully used and the applicant’s defence rights adequately protected.
• Whether the regulator could investigate the precise identity of the service provider in the manner proposed.

The judgment is therefore best understood as a significant application of established interim-relief principles to DSA enforcement, not a new substantive interpretation of platform obligations.

7. Complex Concepts Simplified

Stay

A temporary pause in a decision or process while the court determines a legal challenge.

Judicial review

Court scrutiny of whether a public authority acted lawfully, within its powers and through fair procedures.

Prima facie validity

A measure is treated as valid for present purposes unless and until it is successfully challenged. This is not a final endorsement of its legality.

Ultra vires

Acting outside the powers conferred by law.

Greatest risk of injustice

The court compares the harm of granting interim protection with the harm of refusing it, taking account of both private rights and public interests.

Irreparable prejudice

Harm that later success or compensation would not adequately repair. Financial harm can qualify, but its nature and significance require evidence.

Certiorari and prohibition

Certiorari quashes an unlawful decision; prohibition prevents an unlawful process from proceeding.

Article 267 reference

A request by a national court for the Court of Justice to answer a question of EU-law interpretation or validity needed to decide the case.

8. Conclusion

The High Court refused to halt the investigation because effective, EU-wide DSA supervision and the presumptive validity of the regulatory measures outweighed the applicant’s general and contingent evidence of harm.

The central lesson is evidential and procedural: an arguable legal challenge does not itself justify a regulatory standstill. A stay remains available where the particular balance requires it, but this judgment leaves the investigation’s ultimate legality—and the disputed interpretation of Article 20—for substantive determination.