Duties to the court 

A lawyer occupies two roles that can pull in different directions: a professional retained to advance a client's interests, and an officer of the court with independent obligations to the court and to the administration of justice. Where those two roles genuinely conflict, the duty to the court prevails. This hierarchy is the organising idea for the whole of a lawyer's professional responsibility — every other duty examined elsewhere in this subject, including the duties owed to clients, the handling of conflicts of interest, confidentiality, the treatment of trust money, and the profession's broader commitment to access to justice, operates subject to it.

Why the duty is paramount

The justification is structural rather than sentimental. An adversarial system of justice depends on courts being able to trust what lawyers tell them, both about the facts a client wishes to put forward and about the law that governs the dispute. If lawyers were free to advance whatever helped their client regardless of truth or process, courts could not function fairly, and public confidence in the legal system would erode. The paramount duty is therefore not an external constraint imposed against clients' interests; it is a precondition for a system in which client representation is possible at all. A lawyer does not, and cannot, act simply as the client's mouthpiece.

It follows that the duty to the court is not merely one item on a list of professional obligations to be weighed against the rest. As Giannarelli v Wraith (1988) 165 CLR 543¹ holds, it sits above the duty to the client and qualifies it. A lawyer who is instructed to do something that would breach the duty to the court must decline to follow that instruction, even where the client is insistent and even where following the instruction would advantage the client's case.

Attwells v Jackson Lalic Lawyers Pty Ltd (2016) 259 CLR 1² confined a different thing, and the distinction is worth keeping straight. French CJ, Kiefel, Bell, Gageler and Keane JJ declined to overrule Giannarelli, holding instead at [6] that "in order to attract the immunity, advice given out of court must affect the conduct of the case in court and the resolution of the case by that court". So negligent advice that produces a settlement is actionable, even with litigation on foot and even where the agreement is embodied in consent orders. What was narrowed is the immunity, not the paramount duty.

Not misleading the court

A lawyer must not knowingly make a false statement to a court, whether about the facts, the law, or the client's case, and must not allow a court to be misled by a document, a submission, or evidence the lawyer knows to be false. If a court has been inadvertently misled — for example because information later turns out to be wrong — the lawyer who caused or contributed to that must correct the position as soon as practicable, even where doing so is uncomfortable for the client. This also constrains what a lawyer can do with evidence known to be false: a case cannot be drafted or presented to put forward a version of events the lawyer knows to be untrue.

Not abusing the court's process

The duty to the court also requires a lawyer not to use litigation, or a step within litigation, for an improper purpose. Proceedings, applications, and allegations must have a proper basis; a lawyer should not bring or press claims or applications known to lack merit, run cases designed principally to harass or delay an opponent, or make serious allegations, such as fraud, without a proper factual foundation for doing so. This is distinct from — and typically more demanding than — simply testing whether a claim might succeed; it is about the court's process being used for its legitimate purpose.

Candour about the law

One of the more specific and sometimes counter-intuitive manifestations of the paramount duty is the obligation of candour about the law, including adverse authority: legal authority that is directly relevant to the matter before the court and unhelpful to the client's case. Where a lawyer is aware of such authority and it has not been raised by the other side, the lawyer must not simply let the court proceed in ignorance of it. The lawyer remains free to argue that the authority should be distinguished, does not apply, or should not be followed — but concealment is not an option. This duty exists precisely because it can cut against the client's immediate interest, which is why it is best understood as an application of the paramount duty rather than a freestanding rule of good practice.

Sources of the duty

The duty to the court has long been recognised at common law as flowing from a lawyer's status as an officer of the court, and it is now also reflected in professional conduct rules and rules of court across Australian jurisdictions. The detailed drafting of those rules is not uniform nationally: some jurisdictions apply a shared professional conduct framework, while others retain their own separate legal profession legislation, and the position continues to evolve. The underlying principle is consistent throughout.

The rationale was sharpened rather than replaced in D'Orta-Ekenaike v Victoria Legal Aid (2005) 223 CLR 1³. Gleeson CJ, Gummow, Hayne and Heydon JJ put "the central justification for the advocate's immunity" at [45] as "the principle that controversies, once resolved, are not to be reopened except in a few narrowly defined circumstances". Finality, not professional privilege — which is why Attwells could confine the immunity without touching the paramount duty.

Applying this in a problem question

1. Identify whether there is a genuine conflict between what would serve the client and what the lawyer owes the court — not every awkward moment is such a conflict.
2. If a genuine conflict exists, state that the duty to the court prevails and explain why.
3. Categorise the conduct at issue: does it risk misleading the court, abusing its process, or withholding adverse legal authority?
4. Identify what the lawyer is actually required to do in response — for example, correcting the record, declining to press a submission, or disclosing the authority while arguing against its application.
5. Remember that breach of this duty is not merely a matter of professional embarrassment; it can expose the lawyer to disciplinary consequences and can affect the client's own position in the proceeding.