"Public procurement law" refers to the entirety of the rules and regulations that prescribe a certain procedure for the state, its authorities and institutions when purchasing goods and services that are required to fulfill the tasks of the respective institutions.
European Union
In the European Union, a uniform procurement law regime applies to the entire European market. The European regulations are defined in various directives and are transposed into national law by each member state. These European legal requirements apply if the contract value of the procurement subject reaches or exceeds the relevant threshold.
Germany
Below the threshold, the European regulations generally have no influence on the procurement process. In this case, the different national regulations of the respective member states apply. In Germany, national procurement law is a special part of budgetary law.