For example, the defendant could argue that the contract was fraudulent, either because the applicant misunderstood or concealed essential facts. For example, the terms of a contract are what guide the parties in what they need to do and how they should do it to keep their promise. If a party does not do what the contract predicts, the non-injuring party can take legal action and take legal action against it. An infringement clause protects the rights of a party only if the treaty itself is valid and its conditions are applicable. This means that the contract must be drawn up taking into account the applicable contract law. .