For these reasons, commercial contracts can never last and, even if a contract does not contain a termination clause, the contract can be terminated by a reasonable period of time if one wants to exercise the authorization of termination bonafide.  „A contract is not considered to be a contract of indefinite duration if there is a clause that mentions the nature of the termination of the contract. Although a contract does not set the expiry date of the contract, but if certain provisions of the agreement are considered „essential“, which means that the performance of the contract is based on these conditions, the contract is not considered permanent. A contract may be of indefinite duration if the contract contains an extension clause for a fixed period, but subsequently, if a renewal notification is not made, it ceases to be permanent. An important question is whether a court would accept that a consumer may terminate a part-time user contract that does not explicitly advance this possibility: if, for design reasons, the parties have entered into an intentional and explicit contract of duration or for a very long period, a court may not be prepared to indicate a period within which one of the parties: to terminate the contract without notice. . . .