the pen is mightier than the scalpel - Surgeon not defamed

In a high‑profile defamation dispute heard over many months in the Federal Court of Australia, orthopaedic surgeon Dr Munjed Al Muderis sued Nine Network Australia Pty Limited and associated publications.

The Federal Court’s decision in Al Muderis v Nine Network Australia Pty Ltd marks the first successful reliance on the public interest defence under section 29A of the Defamation Act 2005 (NSW). The case arose from a joint investigation by 60 Minutes, The Age and The Sydney Morning Herald into aspects of the medical practice of orthopaedic surgeon Dr Munjed Al Muderis, particularly patient outcomes, care standards and business practices connected to osseointegration surgery.

Dr Al Muderis alleged that the publications conveyed 75 defamatory imputations. While the Court found that some imputations were carried, the respondents ultimately succeeded on the public interest defence, along with contextual truth. The decision is legally significant not because it resolved allegations of medical negligence or criminal conduct, but because it clarified how public interest operates as an independent legal threshold, separate from proof of wrongdoing.

The public interest defence – structure and purpose

Section 29A introduced a new defence focused on why material was published, not whether it was ultimately true in every respect. Justice Abraham confirmed the three statutory elements:

1. The matter concerns an issue of public interest

2. The respondent believed publication was in the public interest

3. That belief was reasonable

The dispute in Al Muderis did not centre on whether the subject matter was of public interest. That was accepted. The litigation turned on the third element - reasonableness of belief - and, critically, what that enquiry is directed toward.

The Court rejected the proposition that section 29A requires a forensic audit of journalistic conduct.

The statute does not demand perfection. It demands a reasonable belief that publication serves the public interest.

Public interest versus criminality

A central feature of the judgment is the Court’s insistence on separating public interest scrutiny from criminal liability. The publications did not allege that Dr Al Muderis had committed criminal offences, nor was the Court required to determine whether criminal conduct occurred.

Justice Abraham made clear that the public interest defence does not hinge on proving crimes, breaches of professional standards, or regulatory findings. Instead, it addresses whether there is a legitimate public interest in information being brought to light, even where legal or disciplinary outcomes remain unresolved or contested.

This distinction matters. Criminal proceedings are backward-looking and adjudicative. Public interest journalism is forward-looking and informational. The law now recognises that the absence of criminal findings does not negate the public interest in disclosure.

Public interest versus medical wrongdoing

The Court also drew a careful boundary between medical negligence and public interest reporting.

While evidence was led of poor patient experiences and deficiencies in care, the proceedings were not a surrogate medical negligence trial.

The relevance of patient outcomes lay in whether they supported a reasonable belief that prospective patients lacked critical information about a medical practice operating in a high-risk, high-cost clinical space. Justice Abraham accepted that allegations concerning patient selection, post-operative care and commercial practices were matters of public interest regardless of whether every instance amounted to actionable negligence.

In doing so, the Court confirmed that public interest is not confined to established professional misconduct. It extends to systemic concerns, patterns of behaviour and risks that affect informed decision-making by the public.

Reasonableness of belief, not reasonableness of conduct

Perhaps the most consequential aspect of the decision is the Court’s clarification that reasonableness attaches to belief, not behaviour. The applicant sought to defeat the defence by pointing to imperfections in the investigation, including record deletions and reliance on confidential sources.

Justice Abraham rejected that approach. Section 29A does not replicate the qualified privilege defence, which scrutinises journalistic conduct.

The public interest defence asks whether the journalist reasonably believed publication was in the public interest, having regard to what they knew and did at the time.

This distinction repositions public interest as a state-of-mind inquiry, supported by evidence of investigation, rather than a checklist of professional standards.

Confidential sources and the public interest

The Court’s treatment of confidential sources reinforces this doctrinal shift. While acknowledging the heavy reliance on confidential informants, Justice Abraham emphasised corroboration rather than disclosure. No material allegation rested solely on anonymous sources. Each was supported by documents, expert opinion or on-the-record testimony.

The Court rejected arguments that the inability to cross-examine confidential sources undermined procedural fairness. Public interest journalism, particularly in professional and regulatory contexts, often depends on source protection. The law now recognises that reality as part of the public interest calculus.

Corporate belief and individual journalists

Another point of clarification concerned whose belief matters. For corporate publishers, the relevant belief is that of the journalists substantially responsible for the publication, not editors-in-chief or corporate executives. This anchors the defence in the decision-making of those closest to the investigation and insulates it from organisational abstraction.

Why the decision matters

Al Muderis recalibrates defamation law by affirming public interest as a stand-alone legal justification, not a fallback when truth cannot be proved. It confirms that courts will not conflate public interest with criminal guilt, regulatory breach or medical malpractice.

The decision also signals a shift in judicial posture. Rather than policing journalistic technique, the Court focused on whether publication served a legitimate public function at the time it occurred.

Professional significance

For publishers, the case provides a workable roadmap for section 29A. For professionals subject to scrutiny, it clarifies that reputational harm may lawfully arise from public interest reporting even in the absence of criminal or disciplinary findings.

More broadly, the decision positions public interest as a legal concept with its own weight – neither subordinate to criminal law nor dependent on proof of professional wrongdoing. In that respect,

Al Muderis is less about medicine or media, and more about how Australian law now understands the role of information in protecting the public.

Authored by Campbell Dore

Publisher

The Brief

campbell@thebrieflaw.com.au