Judgment of the Court (Third Chamber) of 16 November 2023.#Robert Roos and Others v European Parliament.#Appeal – Public health – Access to the buildings of the European Parliament – Obligation to present a valid EU digital COVID-19 certificate – Decision of the Bureau of the European Parliament – Rules of Procedure of the Parliament – Rule 25 – Concept of ‘power to determine its own internal organisation’ – Article 8(2) of the Charter of Fundamental Rights of the European Union – Protection of personal data – Concept of a measure ‘laid down by law’ – Regulation (EU) 2018/1725 – Articles 5 and 6 – Concept of ‘Union law’ – Inclusion of the internal rules of a Union institution or body.#Case C-458/22 P.