Vigilance from day one of clearance, expansion when the US base is stable.
Stage 06 begins the day the FDA letter arrives. Post-Market Surveillance is a regulatory obligation from day one — complaint handling, MDR/Vigilance reporting decision trees, periodic safety updates. International Expansion is a forward-looking strategic activity that begins only when the US base is producing reliable real-world evidence and the manufacturing is stable enough to support new geographies. Sequencing both correctly is the difference between a clean inspection record and a recall.