The field of public contracts constitutes a typical example of how judges redefine their powers and duties in order to adapt to changes in society. During the first decade of the twenty-first century, substantial modifications have affected the subdivision between the procedural means of judicial protection of the citizen in conflicts relating to public procurement. Under the influence of increasing European standards and in an attempt to preserve national traditions, France, Germany, Italy and Spain have seen a proliferation in available legal remedies. This growing procedural complexity is associated with a significant movement of subjectification in light of which the principles and foundations of that judicial protection should be studied from a new point of view taking into account the diversity of requirements imposed. It is therefore necessary to re-think the place of and developments in judicial protection regarding public procurement.