Necessary and how to determine generic goods (Comparative study by Jurisprudence, Iran, Egypt and UK law)

Determine of Goods is one of the basic terms of contract Pursuant to 190/3 of Iranian civil law. In this article, the determinate of the subject of the contract is not term of validity of contract. On this basis, the present issue topic of discussion in the article is necessary and how to determine the Generic Goods and has been done through the application of the fundamental. Based on the results of the paper determine the Generic Goods inlegal systems is necessary and if not to be determining its cause invalidation of the contract. In Iranian law system Generic Goods can be determine through description or by sample. In Egyptian law apart from determine by description and sample may be specified the Generic Goods through the confession. In UK Law Generic Goods can be determining through the description, by sample or fitness for a specific purpose.