By:Henry I. Oyama
Abstract
The doctrine of stare decisis, meaning “to stand by things decided,” is a foundational principle of the common law system. It promotes certainty, stability, and predictability in judicial decision-making by obligating courts to follow established precedents. Despite its stabilising function, concerns arise as to whether rigid adherence to precedent may inhibit legal development and the attainment of substantive justice. This article examines the conceptual foundations, structure, and judicial application of stare decisis, with particular emphasis on vertical precedent within the Nigerian legal system. It analyses the relationship between the doctrine and the principle of distinguishing, demonstrating that precedent binds only where material facts and legal issues are similar. The article argues that when properly and contextually applied, stare decisis operates not as a barrier but as a bridge to coherent and progressive judicial development.
Keywords: Stare decisis; precedent; ratio decidendi; distinguishing; judicial development; vertical precedent.
1.0 Introduction
Law develops within a framework of established principles. Although it evolves in response to social and economic realities, its legitimacy depends largely on predictability and continuity. Individuals and commercial actors structure their affairs on the assumption that legal consequences will not fluctuate arbitrarily. The doctrine of stare decisis provides this assurance by requiring courts to adhere to previously settled principles of law.
The central inquiry of this article is whether stare decisis functions as a constraint on judicial innovation or as an instrument of structured legal development. The analysis proceeds on the premise that certainty and development are not mutually exclusive objectives. Rather, the interaction between precedent and distinguishing determines whether the doctrine becomes restrictive or facilitative in practice.
Against this backdrop, this paper examines the meaning and jurisprudential foundation of stare decisis, with particular attention to its horizontal and vertical dimensions and the institutional discipline required for its effective operation. It further considers the judicial treatment of the doctrine and the role of Counsel in the operation of judicial precedent, including the extent to which advocacy may strengthen or weaken adherence to established principles. Central to the discussion is the doctrine of distinguishing, which serves as an important mechanism through which courts preserve the authority of precedent while accommodating material differences between cases and the demands of justice.
Ultimately, this paper seeks to demonstrate that the doctrine of stare decisis is neither an impediment to the administration of justice nor an instrument of judicial rigidity. Rather, when properly understood and judiciously applied, it provides a framework within which certainty, consistency and legal development can coexist. The proper use of precedent, coupled with principled distinguishing, therefore enables the law to maintain continuity without becoming impervious to change.
2.0 Conceptual Meaning and Doctrinal Foundation
Stare decisis denotes adherence to decided cases. It is anchored on the obligation of courts to follow earlier judicial decisions when the same questions arise in subsequent litigation. The doctrine mandates fidelity to the ratio decidendi, that is, the legal principle necessary for the decision, as distinct from obiter dicta, which are persuasive and not binding.
In Mbaka v Mbaka , the Supreme Court clarified that a case is authority only for what it decides. Where a court of competent jurisdiction has directly and necessarily determined a principle of law, it remains binding on that court and subordinate courts, except where there exists a recognised basis for departure.
The doctrinal justification for stare decisis rests on three interrelated considerations. First, certainty requires that similar cases produce similar outcomes. Second, stability ensures continuity in legal principles and prevents arbitrary judicial fluctuation. Third, hierarchy preserves institutional order by requiring inferior courts to adhere to superior courts. These considerations collectively sustain public confidence in the administration of justice.
3.0 Horizontal and Vertical Dimensions of Judicial Precedent
The operation of stare decisis manifests in both horizontal and vertical dimensions. Horizontal precedent refers to a court’s adherence to its own previous decisions, subject to recognised exceptions such as decisions given per incuriam or where adherence would perpetuate injustice . Vertical precedent, by contrast, concerns the obligation of lower courts to follow decisions of superior courts within the judicial hierarchy.
The practical importance of stare decisis is most evident in its vertical application. In Ombugadu v Alhaji, the Supreme Court reaffirmed that inferior courts are bound by decisions of superior courts, even where such decisions are perceived to be erroneous. It is not within the competence of a lower court to disregard or declare invalid a binding decision of a superior court. This obligation preserves judicial discipline and institutional coherence.
Vertical precedent therefore ensures consistency in the application of legal principles and reinforces the hierarchical structure upon which the judicial system depends.
4.0 Judicial Treatment and Institutional Discipline
Nigerian courts have consistently emphasised that stare decisis is fundamental to judicial integrity and the orderly administration of justice. A lower court’s refusal to follow binding authority constitutes a serious error and undermines the coherence of the legal system.
In Osakue v. F.C.E., Asaba, the Court stressed that legal principles which have governed relationships over time should not be unsettled merely because an alternative interpretation appears plausible. The maxim stare decisis et non quieta movere: to stand by decided matters and not disturb settled points reflects the judicial preference for stability.
This emphasis on stability does not fossilise the law but ensures that legal development occurs through structured and principled reasoning rather than arbitrary departure from established authority.
5.0 The Role of Counsel in the Operation of Precedent
Within the adversarial system, counsel play a central role in the operation of stare decisis by identifying and presenting relevant authorities. Although advocacy permits persuasive argument, counsel owe a duty to assist the court in arriving at a legally sound determination.
The Court of appeal in Nigeria Customs Service v. Bazuaye, admonished Counsel to cite relevant authorities is arguing their case, and not to attempt to mislead the Court by citing irrelevant cases.
Proper engagement with precedent requires accurate identification of the ratio decidendi and careful analysis of the factual context of the authority cited. Attempts to avoid binding precedent without principled justification undermine both judicial reasoning and institutional credibility. The integrity of the doctrine depends not only on judicial discipline but also on professional responsibility within legal practice.
6.0 Distinguishing as the Mechanism of Flexibility
The most important qualification to stare decisis is the principle of distinguishing. A precedent binds only where the material facts and legal issues are substantially similar. Where relevant differences exist, the court may decline to apply the earlier decision.
In Brittania-U (Nig) Ltd v Seplat Petroleum Dev Co Ltd, the Supreme Court reiterated that a case is authority only for what it decides and nothing more. In other words, A decision will only serve as binding precedent for another case where the facts underpinning the earlier decision and the case under consideration are similar or identical. This principle imposes a duty on courts to examine the factual matrix of earlier decisions before applying them.
The Supreme Court further cautioned in Okafor v Nnaife that justice and fairness demand that the ratio of a case must not be stretched to apply to circumstances materially different from those which gave rise to the decision. Such artificial extension distorts the reasoning underlying the precedent and risks injustice.
Similarly, in Gyoubok v Federal Polytechnic Bauchi, the Supreme Court emphasised that facts are the drivers of legal principles and that principles derived from one factual situation cannot be transported indiscriminately to another. The Court clarified that the doctrine of stare decisis does not authorise mechanical or indiscriminate application of precedent. Rather, a superior court decision binds only where the factual and legal foundations of both cases are substantially similar.
This position reflects the deeper jurisprudential understanding that precedents establish guiding principles rather than universal rules. As the Supreme Court explained in Fawehinmi v Nigerian Bar Association (No 2) & Ors, judicial decisions derive their authority from the facts that produced them, and the applicability of those decisions depends on the similarity of factual circumstances. Judicial principles therefore operate as starting points for analysis rather than rigid formulas.
The implication is clear: distinguishing does not weaken stare decisis; rather, it preserves its integrity by ensuring that precedent is applied rationally and contextually.
7.0 Certainty and Development: A Complementary Relationship
The perceived tension between certainty and legal development arises largely from misunderstanding the scope and function of precedent. Judicial decisions do not operate as inflexible commands but as principled guides informed by factual context.
In Edede v Attorney-General of the Federation & Anor, the Supreme Court reaffirmed that previous decisions must be applied in light of the facts and issues that produced them. The Court emphasised that judicial principles do not operate in an “all-or-nothing” dimension but serve as foundational guides whose application depends on the circumstances of each case.
Similarly, in Igwe v State , the Supreme Court recognised that the law is not static and must remain responsive to evolving realities. Legal development occurs through principled interpretation, distinguishing, and incremental refinement of existing doctrine rather than through disregard of precedent.
Thus, stare decisis and distinguishing operate as complementary mechanisms. While stare decisis ensures continuity, predictability, and institutional stability, distinguishing ensures flexibility and adaptability. Together, they enable the law to evolve in a structured and coherent manner.
8.0 Conclusion
The doctrine of stare decisis is neither an impediment to justice nor an instrument of rigidity when properly understood and applied. Its binding force is confined to the ratio decidendi of cases whose material facts and legal issues correspond with those before the court. Through the mechanism of distinguishing, courts retain the flexibility necessary to respond to new factual circumstances without destabilising established legal principles.
Accordingly, stare decisis functions as a bridge rather than a barrier. It promotes certainty, consistency, and public confidence in the legal system while preserving the capacity for orderly judicial development. Beyond its legal significance, the doctrine also supports economic stability by enabling individuals and commercial actors to predict the legal consequences of their actions. In this way, stare decisis contributes both to the integrity of judicial decision-making and to the progressive development of the law.
HENRY I. OYAMA, ESQ., LL.B., B.L.
Henry I. Oyama, Esq., LL.B., B.L., is the Principal Partner of Oyama Legal Consult, a legal practice based in Abuja, Nigeria.