Worldwide development of electronic commerce is undeniable and joining this manner that facilitates trading and resulting fast communication, is one of the supplements of our Internet market. In this paper we discuss ways of electronic offer and acceptance, time and place of contracting, validity and other requirements. The analysis of these subjects have been done by studying Iranian Electronic Commerce Law [ICEL], UNCITRAL Model Laws, Vienna Convention [CISG] and provisions of progressive countries in this area.

One of the issues and problems discussed in the electronic agreements is the proviso of succession between necessitating and acceptance. Because, according to some legal articles and jurisprudential viewpoints, the succession between necessitating and acceptance is necessary. On the other hand, it seems, at the first glance, that there is a gap between necessitating and acceptance and the proviso cannot be observed. This article, after studying the elementary basis for the necessity of succession and its background, collecting and analyzing all the reasons of this proviso and comparing them with the electronic agreement, and also after studying the existence of succession and the possibility of observing it in such agreements, has reached to this legal conclusion that, first, the succession between necessitating and acceptance is not necessary due to the insufficiency of the reasons of the proviso. Second, if the mentioned reasons are enough it does not include the electronic and written agreements. Third, in electronic agreement, even in Off-line form, there is a succession between necessitating and acceptance or it is possible to make succession. Therefore, according to all jurisprudential viewpoints, the electronic agreement is either totally correct or there is a possibility to contract such an agreement by observing succession.

Survey of meeting option in electronic contracts is one of The topics that rarely have been considered. In this paper, after examining the meeting option concept and its elements, we plan to survey this question whether the meeting option - in meaning of traditional sale - applies in electronic contracts? If the answer to this question is positive, undoubtedly there is meeting option for the transacting parties. This hypothesis is parallel with the discussion of the rights of consumers.

In concluding electronic contracts, many of legal issues imaginable in the real world can be posed; such that the same judgments can be made in both physical and electronic cases and just the appearance may sometimes differ. Despite this, sometimes new cases are put forth that could not have occurred in the real world and their occurrence, due to the intrinsic characteristics of cyberspace, is restricted to electronic contracts. One of the cases in which just the appearance has changed and traditional judgments still apply for electronic instances, is misrepresentation.

Along with the increasing use of electronic devices for concluding an international contract, the most international electronic contracts are concluded in the circumstance which their parties aren’t present in a specific location. Since some of the most important characteristics of each contract are time and place in concluding followed by legal consequences, any country attempt to provide governing rules and regulations on time and place in concluding electronic transactions. Thus, different solutions accepted in national legal systems are in contrast. As a result, codification of international instruments governing on electronic contract rules was introduced. One of the instruments is UNCITRAL Convention related to Use of Electronic Communications in International Contracts adopted by General Assembly of UN on 25 November 2005. If provisions of this convention are compared to Iran’s law about time and place in concluding electronic contracts, it is concluded that; first, this convention hasn’t provided certain rules in some controversial issues and has assigned it to domestic legislature, and second, there aren’t any conflict between this convention, Iran’s electronic commercial law and generally Iran’s domestic law.Accordingly, Iran’s accession to the convention do not cause serious mismatch between governing rules and regulations on this subject.

One of the exclusive institutions of Iranian E-Commerce Law and convention on the use of electronic communications in international contracts approved in 2005 by united nations general assembly is the Nature of Withdrawal Right in Electronic Contracts. Unfortunately researchers haven’t studied the nature of withdrawal right of these two sources and commandments question of research: What is the nature of withdrawal right in Iranian E-Commerce law and convention on the use of electronic communications in international contracts? The method of this research in finding the answer of mentioned question is by using library and inferring from the articles of two mentioned sources. It means that this research has based its comparative study on the related articles of two mentioned sources. Also it has presented on the strength of rational analysis and legal inference method and in legal gap cases, these two sources on the strength of principl 167 of constitution low have retered to other iraian law sources, inclvding subjective and Imamieh law finded and presented its commandent. Importance and necessity of this research is that it is both the first scientific study in issue and a practical research. So its result will be useful for lawyers, attorneys of judiciary, judges of the courts and arbitrators in interpretation of the articles of two mentioned sources about the nature of withdrawal right of electronic contracts and commandments resulting from it.

One of the critical issues of electronic contracts relates to their withdrawal. The essential question of recent research is which methods can withdraw electronic contracts. The method of this research in finding mentioned question answers that the article on Iranian E-commerce code has put the base of comparative study for presenting the withdrawal methods of electronic contracts and solving the existing ambiguity. It has acquired and presented the withdrawal methods of electronic contracts on the strength of intellectual analysis and legal inference. It has been concluded that there are two physical and electronic methods for cancelling electronic contracts. Since this research is the first scientific search in issue and practical research, its results will be used by law scholars, attorneys, judges of courts, and arbitrators in interpreting the articles of the E-commerce code regarding withdrawal methods of electronic contracts.