NEVER PRESENTED DURING
COURSE OF THE TRIAL
As held in Pigao v. Rabanillo, for documentary evidence to be considered by the court, it must have been presented during trial and formally offered.
Thus, it would be unreasonable to apply here the general rule that objection to the admissibility of evidence, if not made at the time such evidence is offered, shall be deemed waived.
As the demand letter was never presented during the course of the trial, Tan was never alerted to its possible inclusion in the prosecution’s formal offer of evidence.
Thus, petitioner’s failure to timely object to this piece of evidence (the demand letter) is excusable.
MERE ID & MARK DOES NOT MEAN IT HAS BEEN OFFERED AS PART OF EVIDENCE
A formal offer is necessary because it is the
duty of a judge to rest his findings of facts and
his judgment only and strictly upon the
evidence offered by the parties to the suit. It is
a settled rule that the mere fact that a particular
document is identified and marked as an
exhibit does not mean that it has thereby
already been offered as part of the evidence of
a party. [Parel v. Prudencio, G.R. 146556
(2006).