Advocate Mandate and Authority to Represent

Prosecution v RWIGASS CIGARETTE COMPANY SARL et al, RPAA 0056/06/CS and RPAA 0155/06/CS, Supreme Court of Rwanda, decided on 30 May 2008, remains a useful authority on advocate authority and proof of mandate. The case is cited in Rwanda Law Reports, Vol. 1 [2023], in the list of cases considered and through later discussion in Bayingana et al v Ndabamenye. Its continuing value lies in a simple but important point. An advocate who appears in court is usually presumed to have authority to represent the client, but that presumption is not absolute.

The available public materials identify Rwigass as a Supreme Court authority on representation of a litigant and proof of mandate. They do not provide the names of the judges who decided the original 2008 case. For that reason, the safer approach is to discuss the case by reference to the Supreme Court and to avoid naming a panel that the accessible materials do not confirm. The later case of Bayingana et al v Ndabamenye, which cited and applied the Rwigass principle, was decided by a named Supreme Court panel. Those names help identify the later judgment, but they should not be treated as the panel in the original Rwigass decision.

The facts of Rwigass do not need to be overstated. The lasting precedent does not lie mainly in the substantive criminal accusations involving the company and Pierre Marie Noah. It lies in the procedural question about whether an advocate still had authority to represent a party before the Supreme Court. In the later Supreme Court account, the advocate no longer had contact with the client, had not communicated with the client for a long period, did not know the client’s address and produced no mandate authorising representation before the Supreme Court. Those details moved the case away from the ordinary assumption that an advocate who appears in court is properly instructed.

The legal issue can be stated in ordinary language. When a lawyer stands up in court and says that he or she represents a party, the court will normally accept that statement. Otherwise, litigation would become slow and awkward, with every appearance turning into a separate inquiry about authority. But what happens when the surrounding facts create a real doubt? Can the court still treat the advocate’s submissions, admissions or procedural steps as binding on the litigant? Rwigass answers that the professional status of the advocate creates only a simple presumption. It can be rebutted.

The Supreme Court’s answer, as later reported and applied, was that an advocate is not allowed to represent a litigant where it is clear that the advocate no longer has contact with the client, has not communicated with the client, does not know the client’s address and fails to present a mandate for representation before the Supreme Court. In those circumstances, the ordinary presumption of authority is lost. The court’s approach treats representation as a matter of authority and fairness, not merely as a matter of physical appearance in the courtroom.

The rule from Rwigass may be put this way. An advocate appearing before court is ordinarily presumed to have authority to represent the client. That presumption is practical and necessary, but it is rebuttable. If credible circumstances cast doubt on the advocate’s authority, the advocate must prove the mandate or otherwise show the basis and scope of the authority relied upon. If that cannot be done, the advocate’s acts should not automatically bind the supposed client. The rule protects the litigant, but it also protects the court from deciding a case on the basis of doubtful representation.

The decision matters because legal representation depends on trust at several levels. The client trusts the advocate to speak and act according to instructions. The court trusts the advocate to appear only when properly authorised. The opposing party trusts the process enough to treat submissions and concessions as meaningful. If that chain of trust breaks, litigation can become unfair very quickly. A lawyer who has lost contact with the client may file an appeal, abandon a claim, concede a point or fail to raise an objection in a way that seriously affects the client’s rights. Rwigass gives courts a reasoned way to pause and ask for proof.

At the same time, the case should not be read as requiring a written power of attorney every time an advocate appears. That would be impractical and probably unnecessary in ordinary litigation. The point is more modest. In normal circumstances, appearance by an advocate is enough. In doubtful circumstances, especially where non contact, absence of instructions or uncertainty about the client’s whereabouts is shown, the court may demand more. That balance is sensible. It preserves the efficiency of professional representation while preventing the process from being used in the name of a person who may not have authorised it.

The evidential lesson is especially useful. Rwigass shows that the court may look at practical indicators of the lawyer client relationship. Has the advocate communicated with the client? Does the advocate know where the client is? Is there a written mandate or other proof of instructions? Was the advocate authorised for the particular stage of the proceedings, especially before the Supreme Court? In a company case, was the advocate instructed by a person or organ with authority to bind the company? These questions are not formalities for their own sake. They help determine whether representation is real and current.

For advocates, the practical lesson is direct. A lawyer should keep records of instructions, contact details and authority to act, especially when a case moves from one level of court to another. If the client is abroad, has changed address, has died, has become difficult to reach or communicates through relatives or company officers, the advocate should be ready to explain the legal basis of continued representation. A court may not be impressed by vague statements where the advocate cannot identify the client’s location or produce any current authority. Silence and uncertainty can become procedurally dangerous.

For litigants, the case offers a reminder that representation is not something to leave informal forever. Clients should give clear instructions and keep communication channels open. Companies should ensure that advocates are instructed by competent officers or by a proper company decision where required. A litigant who later complains about unauthorised representation will be in a stronger position if the surrounding records show lack of contact, lack of authority or confusion about who instructed counsel. On the other hand, a litigant who disappears for years and leaves matters vague may create avoidable problems.

Opposing parties can also rely on the precedent, but they should do so carefully. Rwigass is not a licence to make tactical objections whenever the other side appears through an advocate. An objection to authority should be grounded in facts. Those facts might include the death of a party, uncertainty about a company resolution, inconsistent identity information, lack of current contact, absence of a known address or counsel’s own admission that communication with the client has broken down. Without such material, the ordinary presumption of authority should usually remain in place.

Rwigass fits into a broader Rwandan line on advocate mandate. Later decisions such as Uwitonze et al v Rwigema and Nyamuhungu v Rusenyi Coffee Growers are reported as confirming that an advocate is generally not required to justify mandate merely because he or she appears as an advocate, but that the presumption remains simple and may be rebutted. Bayingana et al v Ndabamenye brought these authorities together in a more developed civil procedure setting. In that later case, the Court cited Rwigass for the proposition that an advocate could not continue to represent a litigant when the advocate had no effective contact with the client and failed to prove mandate.

The connection with Bayingana also shows the possible consequences of unauthorised representation. Later case law suggests that acts done by an advocate without authority may be null and void and that the matter may have to return to the position before those proceedings. That is a serious result. It explains why courts should not ignore credible doubts about mandate, but it also explains why objections should be carefully tested. Nullifying procedural steps can affect finality, costs, delay and the rights of other parties. The doctrine must therefore be used with care rather than as a routine litigation weapon.

The best reading of Rwigass is that it draws a line between ordinary professional presumption and proof when the presumption has become doubtful. In ordinary circumstances, the advocate’s appearance is enough. Where the facts suggest that the lawyer may no longer be acting with authority, the court may ask for evidence of mandate. That modest rule supports procedural fairness, protects litigants from unauthorised acts and helps preserve the legitimacy of judgments. It reminds everyone in the courtroom that representation is not just a robe and a title. It is authority to act for a real client.

Prosecution v RWIGASS CIGARETTE COMPANY SARL et al remains useful precisely because its point is practical. Courts need advocates to be able to act without proving authority at every turn. But litigants should not be bound by lawyers who have no contact, no instructions and no proof of mandate when serious doubts have been raised. The precedent gives Rwandan courts a balanced method: presume authority at first, test it when credible doubt appears, and refuse to let doubtful representation control the rights of an absent or unknowing party.

Source note. This article is based on the Rwanda Law Reports, Vol. 1 [2023], especially Bayingana et al v Ndabamenye and its references to Prosecution v RWIGASS CIGARETTE COMPANY SARL et al, Uwitonze et al v Rwigema, and Nyamuhungu v Rusenyi Coffee Growers, with reference to Law No. 22/2018 of 29/04/2018 relating to civil, commercial, labour and administrative procedure. It is prepared for public legal education only and should not be treated as legal advice for any specific representation or mandate dispute.

Suggested citation

Ronald Serwanga, “Advocate Mandate and Authority to Represent” East Africa Legal Insight (23 July 2026).