
If an allegation is not specifically denied or the denial is a negative
pregnant, the allegation is deemed admitted. Where a fact is alleged with some
qualifying or modifying language, and the denial is conjunctive, a 'negative
pregnant' exists, and only the qualification or modification is denied, while
the fact itself is admitted. A denial in the form of a negative pregnant is an
ambiguous pleading, since it cannot be ascertained whether it is the fact or
only the qualification that is intended to be denied. Profession of ignorance
about a fact which is patently and necessarily within the pleader's knowledge,
or means of knowing as ineffectual, is no denial at all.[2]
[1] Republic of the Philippines v. Sandiganbayan, 453 Phil. 1059, 1107
(2003).
[2] Venzon v. Rural Bank of Buenavista (Agusan del Norte), Inc., G.R. No.
178031, August 28, 2013, 704 SCRA 138, 147-148.