Demystifying the Parol Evidence Rule - An Analysis of the Parol Evidence Rule in American Contract Jurisprudence and the lack thereof under the CISG
The parol evidence rule is an integral doctrine of the common law contract jurisprudence. The rule was established in the 17th century English common law and has since spread amongst most of the common law jurisdictions. When the rule was first established it had a rather straightforward substantive character which forbid contracting parties who had reduced their agreement to a written instrument