It shall have effect as far as it can have effect.

Explanation

(English-origin maxim.) An instrument or act that cannot operate as intended will nonetheless be given whatever legal effect it can lawfully support — the law saves what can be saved.

Where this applies

• A deed that is defective as a conveyance is upheld as a contract to convey — the court gives it whatever effect it can lawfully support.
• A check written to the wrong payee name cannot operate as a negotiable instrument but may still serve as evidence of a debt — the law finds the closest valid purpose.
• A trust that fails because it violates the rule against perpetuities is enforced as far as it can go, preserving distributions that have already vested.