Further information from the Registrar Clarification of news item dated 24 March 2023. After the news item published March 24 I have received comments and questions as regards some of the guidance provided in this news item and the FAQs, primarily concerning the way of filling in the European patent details’ section of the opt-out template, in particular the country abbreviation section. In view of these comments I am now making it very clear that the requirements of an opt-out are prescribed in Article 5 of the Rules of Procedure. It is up to each and every applicant to make his/her own assessment of these requirements and act accordingly when filling in an opt-out application. As the Registrar I cannot give any legal advice on the interpretation of Article 5 of the Rules of Procedure. Any legal interpretation of the UPC Agreement and the Rules of Procedure are ultimately for the Court to make.