four corners rule

Definition of "four corners rule"
  1. This is a legal guideline that states when a document, such as a contract, deed, or will, appears to be complete and self-explanatory, then no external evidence can be used to dispute it
How to use "four corners rule" in a sentence
  1. The lawyer invoked the four corners rule to prevent the introduction of external evidence that would question the validity of the contract.
  2. Due to the four corners rule, the opposing party was unable to use an oral agreement to alter the clear terms of the written contract.
  3. Under the four corners rule, the judge ruled that the will was complete and unambiguous, thus, no other document or testimony was taken into consideration.

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