Achieving a CE mark is a major milestone but it is not the end of the regulatory journey. Once a medical device enters the market, Post-Market Surveillance (PMS) becomes the primary mechanism for demonstrating that the device remains safe, effective, and compliant throughout its lifecycle. A well-structured PMS system ensures audit readiness, supports continuous improvement, and helps manufacturers identify and mitigate risks based on real-world use. This checklist provides a practical overview of key PMS requirements under EU MDR