latent ambiguity

Mutual assent is a core requirement for a valid contract, signifying an agreement by all parties to the same terms, conditions, and subject matter

. Latent ambiguity, on the other hand, is a type of ambiguity in a contract's language that is not apparent on the surface but arises when the terms are applied to external facts or circumstances, and can prevent a finding of mutual assent. 

Mutual Assent

  • Definition: Mutual assent (or a "meeting of the minds") means the parties have agreed to the same essential terms of the contract.

  • Objective Standard: Courts use an objectivestandard to determine if mutual assent exists, looking at the parties' outward expressions (words, actions, etc.) rather than their secret subjective intentions. This is typically shown through a clear offer and an unqualified acceptance.

  • Function: It is an essential element for the formation of a legally binding contract. Without it, a contract may be deemed void or unenforceable. 

Latent Ambiguity

  • Definition: Latent ambiguity is a hidden ambiguity. The language of the contract looks clear and unambiguous on its face, but an uncertainty or a possibility of multiple reasonable interpretations is revealed when external evidence or real-world application is considered.

  • Example: A contract for the sale of cotton to be shipped on the vessel "Peerless" is a classic example. The contract language appears clear, but it becomes ambiguous when it is discovered there are two different ships named "Peerless" departing at different times.

  • Function: It serves as an exception to the rule that contracts must be enforced according to their plain language. When a latent ambiguity is found, courts will admit extrinsic (external) evidence to determine what the parties truly intended, in an effort to enforce the contract if possible. 

Key Difference and Relationship

The core difference is their function and timing:

  • Mutual assent is a foundational element required at the time of contract formation.

  • Latent ambiguity is a potential defect or problem in the contract's language that may be discovered later during the contract's performance or in a dispute. 

A latent ambiguity can directly impact mutual assent. If a latent ambiguity reveals that the parties had two different, but equally reasonable, interpretations of a material term (e.g., which "Peerless" ship), and neither party was aware of the other's interpretation, a court may find that genuine mutual assent was never achieved, rendering the contract unenforceable. However, if the court can use extrinsic evidence to determine one single, shared intent, they will often do so to uphold the contract.