The Directive on the re-use of public sector information, 2003/98/EC, amended by 2013/37/EU is the first EU legislation on the reuse of public sector information which established a requirement to ensure that public sector publishes its open data in machine readable format, and that it handles the requests of users, with a possibility of a redress before an independent authority and/or the court. It restricted the possibilities for discrimination among users and for the granting the exclusive rights. It also requires of all member states to establish ‘practical arrangements’ for publication of open data, what in practice led to the development of the member states’ data portals and the European open data portal that connects them. The Directive iswill be replaced by the EU Open Data Directive which came into force in July 2019, and has to be transposed by the member states by July 2021.