Thailand names three device credentials, not one

Three names sit on one risk ladder

Thailand's four-class system — Class 1 through Class 4, low risk to high — comes from a 2020 ministerial notification on risk-based classification issued under the Medical Device Act. What it produces isn't a single certificate that scales with class. A Class 1 device is listed, and Thai FDA issues a Certificate of Listed Medical Device against a streamlined dossier — label, instructions for use, specifications, and a declaration of conformity. A Class 2 or Class 3 device is notified, reviewed against the full ASEAN Common Submission Dossier Template and issued a Certificate of Notified Medical Device. A Class 4 device is licensed, going through Thai FDA's most thorough evaluation before a Certificate of Licensed Medical Device issues. Three names, two boundaries, and each boundary marks a change of instrument rather than a change in how carefully the same instrument gets read.

The name carries the dossier requirement with it

Because Listing, Notification, and Licensing are separate routes rather than tiers of one certificate, the documentation floor attached to each one is fixed by which route a device sits in, not negotiated case by case. A Class 1 filing stays on its lighter dossier even as CSDT-format documentation has become standard practice across the region; a Class 2 or 3 filing owes the full CSDT regardless of how simple the device itself seems; a Class 4 filing owes Thai FDA's fullest review, reserved for the highest-risk devices on the register. A team that treats these as one continuum — assuming a “more thorough” Class 3 filing can borrow structure from a Class 1 dossier and just add detail — is trying to scale a document built for one legal route into a shape meant for another.

All three renew on the same clock, so the calendar isn't the tell

It would be easy to assume the three names track three different renewal cycles, the way a Taiwan device licence and its underlying quality-system certificate run on two different clocks. Thailand doesn't split that way: a Listing, a Notification, and a License each carry a five-year validity period, and each renews through a fresh full submission of documents rather than a lighter check-in. The distinction the three names carry isn't duration. It's which review pathway and which dossier a device was built against in the first place — a fact a renewal date alone doesn't preserve.

A reclassification changes the credential, not just the number

Because the three routes are legally distinct rather than gradations of one certificate, a device that gets reclassified across one of the two boundaries — a Class 1 device recharacterized into Class 2, or a Class 3 device pushed into Class 4 — isn't a matter of upgrading the certificate already on file. It calls for filing under the credential that the new class actually requires, against that credential's own dossier, because there's no single generic “Thailand device certificate” for a class number to simply raise. A tracking record built around class alone, with no field for which of the three instruments a device currently holds, has nothing to flag when a reclassification event means a different application altogether rather than an amendment to the one that already exists.

Where this meets the file

A Thailand registration record needs the credential type — Listing, Notification, or License — recorded as its own field alongside the class number, not inferred from it, plus the CSDT dossier depth that credential required at filing and its five-year renewal date. A cross-border registration tracker built to carry that structure, alongside the launch catalog's other device-registration templates, is previewed there now. If your program has tracked Thai FDA's three credentials differently, the shelf takes that correction directly.