Contra Proferentem rule is a legal doctrine in contract law which states that any clause considered to be ambiguous should be interpreted against the interests of the party that created, introduced, or requested that a clause be included. 작성자 불이익의 원칙 계약서 문구 해석 시 모호한 경우 작성자(통상 발주자)에게 불리하게 해석하는 원칙