The Supreme Court in Ohijinle vs. Adeagbo (1988) 2 NWLR (Pt. 75) 238 held that where documentary evidence have been admitted in evidence, demeanour plays an insignificant if any role. The documents tendered in the case should be used as a hanger with which to assess oral testimony.
Incontestably, if a party fails to register an objection to the admissibility of a document in the bowel of a trial Court, he is estopped from opposing its admission on appeal. This hallowed principle of procedural law is elastic. It admits of an exception. Where a document is inherently inadmissible, as in the instant case, the rule becomes lame. The law grants a trial Court the unbridled licence to expunge admitted inadmissible evidence at the judgment stage. An appellate Court enjoys the same right so far as the document is inherently inadmissible. The wisdom behind these is plain. A Court of law is drained of the jurisdiction to act on an inadmissible evidence in reaching a decision, see Alade v. Olukade (1976) 2 SC 183; IBWA v. Imano Ltd. (2001) 3 SCNJ 160; Durosaro v Ayorinde (2005) 8 NWLR (pt. 927) 407; Namsoh v. State (1993) 5 NWLR (Pt. 292) 129; Abubakar v. Joseph (2008) 13 NWLR (Pt. 1104) 307; Abubakar v Chuks (2007) 18 NWLR (pt. 1066) 389; Phillips v. E.D.C. & Ind. Co. Ltd. (2013) 1 NWLR (pt. 1336) 618; Nwaogu v. Atuma (2013) 11 NWLR (Pt. 1364) 117.
— O.F. Ogbuinya, JCA. Impact Solutions v. International Breweries (2018) – CA/AK/122/2016