what is the parol evidence rule, and what is the purpose of the rule?
What is the âparol evidence ruleâ? The parol evidence rule states that, if an agreement between two parties is made in writing, the parties may not present evidence in court of any oral or implied agreement that contradicts what is written down.
Parol refers to verbal expressions or words. Verbal evidence, such as the testimony of a witness at trial. In the context of contracts, deeds, wills, or other writings, parol evidence refers to extraneous evidence such as an oral agreement (a parol contract), or even a written agreement, that is not included in the relevant written document.