عنوان مقاله [English]
Contingency fee is one of the common institutions of common law legal system particularly in the united state. In this type of fees, the payment of fee is conditional to the results of lawsuit. So if the lawsuit fails, no fee would be paid to the lawyer and if the lawsuit is successful, more than usual amount or a pecent of condemned amount will be paid. Despite accepting theses agreement in some legal systems, there are some limitations in order to make conformity with their own legal system which make different, the importance and functions of it in compare with the U.S. In some legal systems, other institutions with the same function are predicted too. In Iran legal system, despite of freedom of contract, according to article 80 of the law of attorney regulations, a type of contingency fees which is a part of a demand are prohibited. This paper with a comparative attitude and with insisting on U.S legal system and clarifiying the conditional and contingency fees and its advantages and disadvantages, defend the accepting of it in Iran legal system.