The idea that data that has been generated or collected by public sector bodies or other entities at the expense of public budgets should benefit society has been part of Union policy for a long time. Directive (EU) 2019/1024 and sector-specific Union law ensure that the public sector bodies make more of the data they produce easily available for use and re-use. However, certain categories of data, such as commercially confidential data, data that are subject to statistical confidentiality and data protected by intellectual property rights of third parties, including trade secrets and personal data, in public databases are often not made available, not even for research or innovative activities in the public interest, despite such availability being possible in accordance with the applicable Union law, in particular Regulation (EU) 2016/679 and Directives 2002/58/EC and (EU) 2016/680. Due to the sensitivity of such data, certain technical and legal procedural requirements must be met before they are made available, not least in order to ensure the respect of rights others have over such data or to limit the negative impact on fundamental rights, the principle of non-discrimination and data protection. The fulfilment of such requirements is usually time- and knowledge-intensive. This has led to the insufficient use of such data. While some Member States are establishing structures, processes or legislation to facilitate that type of re-use, this is not the case across the Union. In order to facilitate the use of data for European research and innovation by private and public entities, clear conditions for access to and use of such data are needed across the Union.