Case C-300/21, Österreichische Post (Non-material damage resulting from unlawful processing of data): Judgment of the Court (Third Chamber) of 4 May 2023 (request for a preliminary ruling from the Oberster Gerichtshof — Austria) — UI v Österreichische Post AG (Reference for a preliminary ruling — Protection of natural persons with regard to the processing of personal data — Regulation (EU) 2016/679 — Article 82(1) — Right to compensation for damage caused by data processing that infringes that regulation — Conditions governing the right to compensation — Mere infringement of that regulation not sufficient — Need for damage caused by that infringement — Compensation for non-material damage resulting from such processing — Incompatibility of a national rule making compensation for such damage subject to the exceeding of a threshold of seriousness — Rules for the determination of damages by national courts)