- NI Act, Section 118. Presumptions as to negotiable instruments of consideration
- NI Act, Section 119. Presumption on proof of protest
- NI Act, Section 120. Estoppels against denying original validity of instrument
- NI Act, Section 121. Estoppel against denying capacity of payee to endorse
- NI Act, Section 122. Estoppels against denying signature or capacity of prior party