ISO 13485 · Expert · 15 min lesson
MDR conformity assessment for auditors: Annex IX, Annex XI and notified body certificates
EU MDR 2017/745 Articles 52 and 56, Annexes IX, X, XI and XII, with Regulation (EU) 2023/607 transition dates and ISO 13485:2016 clause 4.2
What you will learn
- Distinguish Annex IX and Annex XI routes.
- Read a certificate scope and conditions.
- Prepare for notified body QMS and surveillance audits.
Key takeaways
- Article 52 assigns the conformity assessment route by device class.
- Annex IX covers the quality system and technical documentation; Annex X with Annex XI is the alternative route.
- Class III and implantable class IIb documentation is assessed for every device; other IIb and IIa devices are sampled.
- A certificate under Annex XII and Article 56 lasts at most five years and its scope and conditions bind the manufacturer.
- Significant changes must be notified to the notified body before implementation.
- Surveillance audits are at least yearly, unannounced audits at least every five years, and legacy certificates carry transition conditions.
Free practice question
Tessel's project plan PL-02 rev 1 shows: design freeze January, verification March, validation June, label proofs July, CE mark September. It does not state the device class, the conformity assessment route or any notified body step. The product is a class IIb powered suction unit.
What is the main gap?
The plan has no conformity assessment route or notified body step, which Article 52 requires for a class IIb device.
Correct. Article 52 requires class IIb devices to go through Annex IX or Annex X with XI, so the plan must include it.
The plan has too many boxes for a small company.
Not quite. The number of boxes is irrelevant; Article 52 requires a conformity assessment step regardless.
Label proofs should come before validation.
Not quite. The order of label proofs is not the gap; the missing Article 52 conformity assessment is.
A CE mark in September is too early for any device.
Not quite. Timing of a CE mark depends on completing Article 52 assessment, so the date itself is not the main gap.
Key terms
- notified body: A conformity assessment body designated under the MDR to assess devices and quality systems, identified by a four digit number (EU MDR 2017/745 Chapter IV).
- Annex IX: Conformity assessment based on a quality management system and on assessment of technical documentation (EU MDR 2017/745 Annex IX).
- Annex XI: Conformity assessment based on production quality assurance (Part A) or product verification (Part B), combined with Annex X where applicable (EU MDR 2017/745 Annex XI).
- certificate scope: The devices, classification, intended purpose and conditions identified in a notified body certificate (EU MDR 2017/745 Annex XII).
- unannounced audit: A surveillance audit by the notified body without prior notice to the manufacturer or its critical suppliers (EU MDR 2017/745 Annex IX).
Official sources
- Regulation (EU) 2017/745 on medical devices (MDR), Articles 52 and 56 and Annexes IX to XII
- European Commission: notified bodies for medical devices
- ISO 13485:2016 Medical devices - Quality management systems - Requirements for regulatory purposes
- ISO 19011:2026 Guidelines for auditing management systems
Go further
The full lesson has narrated slides, more scenario questions with explained answers and a simulation.
Open the AcademyWatch on YouTubeIllustrative example. Educational only, not legal advice.