Though the embryo donation is recognized as one of the methodsof infertility remedy, and the Act of donation way of embryo to an infertile couple has been approved in Iran, it seems that the Act is imperfect in various fields, as an example the legal nature of embryo donation. There have been suggested various and sometimes contradictory interpretations on embryo donation. Therefore, for removal of the ambiguity and also to settle and arrange the legal relations
between the parties of this position, in this article, the embryo assigned by the owners of gamete and its legal nature in comparison with contract of settlement, contract of mandate, contract of donation and private contracts, have been examined. Consequently, the legal relations and rights and duties of the parties shall be specified.
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