Within the framework of our studies, we regard economic intelligence as a scientific object. Thus, it is not sufficient to consider only the definitions of the concept for its comprehension. In our approach, we regard economic intelligence as a process. This process is composed of the stages of identification of a decisional problem, translation of the decisional problem into information search problems, identification of the relevant sources of information, collection of relevant information, analysis of information collected to extract the indicators for the decision, the interpretation of the indicators and finally the protection patrimony which covers all the stages. And in addition we identified three invariants in the problems associated with the concept: decision problem, information and protection of patrimony. We think that the studies of the stages of the process and these invariants should allow a better comprehension of the problems of the concept and thus give better guaranteed solutions, in term of model or term of technology