PRINCIPLE STATEMENT

Failure to comply with statutory requirements such as filing an appeal within the specific period of time allowed by law from the date of judgment or within such further extended period as may be granted by court order deprives the appellate court of jurisdiction to entertain or hear such appeal; the irregularity cannot be regarded as a mere technicality but constitutes a fundamental defect which renders the proceedings and judgment of the appellate court null and void.

RATIO DECIDENDI (SOURCE)

Per Iguh, JSC, in Asore & Anor v. Lemomu & Ors (1994) NLC-2071986(SC) at pp. 7–8; Paras A–D.
"Failure to comply with statutory requirements such as the filing of an appeal within the specific period of time allowed by law from the date of judgment or within such further extended period of time as may be granted by an order of court deprives the appellate court of jurisdiction to entertain or hear such an appeal. The irregularity cannot be regarded as a mere technicality but constitutes a fundamental defect which renders the proceedings and judgment of the appellate court in respect of such purported appeal incompetent and consequently null and void."
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EXPLANATION / SCOPE

Appeal filing time limits are jurisdictional, not merely procedural. Filing outside the prescribed period (without extension order) means: the appellate court never acquired jurisdiction, any proceedings are nullities (void ab initio), and the judgment has no legal effect. This strict rule reflects: finality interests (judgments must become final), statutory mandate (legislatures set time limits for policy reasons), and jurisdictional nature (time limits are conditions precedent to appellate jurisdiction). “Cannot be regarded as mere technicality” emphasizes this isn’t a curable irregularity—it’s fundamental. The defect is incurable by: parties’ consent, substantial compliance, or retrospective extension. The only cure is: filing within time, or obtaining extension order before the time expires. Late-filed appeals without extension are: incompetent (lacking jurisdictional foundation), null (no legal existence), and void (producing no legal effects). Even if the appeal has apparent merit, the time bar prevents consideration. This harsh rule promotes: respect for time limits, prompt appeals, and finality in litigation.

CASES APPLYING THIS PRINCIPLE