
Swissmedic Confirms It Will Recognize EU MDR Transition Extension
30 March 2023
UK MHRA Announcement: New Dates for UK Regulation & CE Marking
27 April 2023Page Last Updated: 5 January 2025
Transition Timeline
Frequently Asked Questions
When is the new MDR compliance deadline for legacy devices?
26 May 2026: Class III custom-made implantable devices (CMDs)
31 December 2027: Class III, Class IIb implantable devices, except for sutures, staples, dental fillings, dental braces, tooth crowns, screws, wedges
31 December 2028: Class IIb (all other), Class IIa, Class I devices
Which devices qualify as a ‘legacy’ device under the transition extension?
The following are legacy devices:
- Devices that had a valid MDD/AIMDD CE Marking certificate on 26 May 2021, that did not expire before 20 March 2023, and were not withdrawn by the Notified Body.
- Devices that had a valid MDD/AIMDD CE Marking certificate on 26 May 2021 but expired prior to 20 March 2023, if the following conditions are met: 1) it was not withdrawn by the Notified Body; and 2) before the CE certificate expired the manufacturer either had a signed written agreement in place with the Notified Body or had been granted an Article 59(1) derogation or Article 97(1) authorization by an EU Competent Authority.
- Devices that were Class I self-certified under the MDD, but were up-classed under the MDR, and held a Declaration of Conformity lawfully drawn up prior to 26 May 2021.
If you are in doubt, please consult the MDCG Legacy Device Flowcharts. They help confirm if a device is covered by the extended transition period or not.
NOTE: for custom-made Class III implantable devices, the MDR transition extension (Regulation 2023/607) does not specify any prerequisites, i.e., the extension is available for Custom-made Class III implantable devices, even if the device was not MDD/AIMDD compliant before 26 May 2021 and if the device is newly being placed on the market after the MDR’s date of application.
What is the criteria to remain a legacy device, i.e., avoid having to MDR CE Mark early?
In order to remain a legacy device, the following criteria must be met:
- The device must continue to comply with the MDD/AIMDD
- No significant changes to the design or intended purpose of the device after 26 May 2021
- The device must not present an unacceptable risk to the health or safety of patients, users or other persons, or to other aspects of the protection of public health
- Manufacturer must comply with the MDR’s market surveillance, post-market surveillance, vigilance, and registration requirements
- No later than 26 May 2024, implement an MDR-compliant quality management system (in accordance with MDR Article 10(9))
- No later than 26 May 2024, have lodged an application with a Notified Body for conformity assessment for that device (in accordance with Section 4.3, first subparagraph, of Annex VII)
- Manufacturer must have a written agreement in place with a Notified Body no later than 26 September 2024
What if my MDD/AIMDD CE Certificate expired before May 20, 2023?
The device is still eligible for the full legacy device extension, if the following criteria have been met:
- The CE Certificate was valid on 26 May 2021, and
- The CE Certificate was not withdrawn afterward, and
- Before the CE Certificate expired, the manufacturer had a signed written agreement in place with a Notified Body (per Section 4.3, second subparagraph, of Annex VII), and/or
- A Competent Authority had granted a derogation in accordance with Article 59(1) or authorization under Article 97(1)
All other ongoing requirements for legacy devices apply, e.g., no significant changes allowed to the intended purpose or design.
How do I ‘prove’ my device is a valid legacy device under the extension?
The EU Commission published a Q&A document, which provides options on how to demonstrate a legacy device is covered by the extension under Regulation 2023/607.
- Manufacturers can generate a self-declaration statement, confirming that the extension requirements per Regulation 2023/607 have been fulfilled. The statement should clearly identify the devices covered by the extension and the CE Certificate(s) to which it applies.
- The Notified Body could issue a confirmation letter stating the “receipt of the manufacturer’s application for conformity assessment and the conclusion of a written agreement”. Like the above self-declaration, the Notified Body’s confirmation should clearly identify the devices covered by the extension and applicable CE Certificates.
- Manufacturers (or their authorized representatives) could request Certificates of Free Sale and the Competent Authority could issue them noting the extended CE marking validity period.
The Q&A document includes links to a template for the Manufacturer’s self-declaration statement and the Notified body’s confirmation letter.
What kinds of changes can I make to the device without impacting its legacy device status?
Per MDCG 2020-3 (Rev.1, May 2023) manufacturers may make the following changes without impacting its legacy device status:
- Administrative changes, such as to the manufacturer’s name or address or to the authorized representative, are considered administrative changes.
- Changes that do not have an impact on the device’s design or intended purpose. For example, change in manufacturing site, including changes that affect subcontractors and suppliers.
Other changes that may impact the design and/or intended purpose, should be assessed on a case-by-case basis.
Examples of changes to the intended purpose/design that do not constitute a significant change include:
- Changed ingredient or material from an existing supplier, that meets the existing specifications
- Shelf-life change validated by protocols approved by the Notified Body
Examples of changes to the intended purpose/design that do constitute a significant change include:
- New user or patient population
- New or modified architecture or database structure, change of an algorithm for software devices
MDCG 2020-3 has helpful flowcharts on what may or may not constitute a significant change under the transition provision of the MDR (Article 120(3)). As well, manufacturers can discuss the proposed change with their Notified Body to clarify if it is non-significant under MDR Article 120(3) or if it will push the device into MDR compliance.
Which parts of the MDR apply to my legacy device(s)?
The following aspects of the MDR apply to MDD/AIMDD CE Marked legacy devices:
- Market surveillance
- Post-market surveillance, including obligations to generate Periodic Safety Update Reports (PSURs)
- Vigilance reporting requirements
- Economic Operator & Device registration requirements
- No later than 26 May 2024, the quality system requirements in accordance with MDR Article 10(9)
What if I don’t plan to CE Mark under the MDR? Am I still eligible for the extension?
If manufacturers meet the requirements under the first FAQ titled “Which devices qualify as a legacy device under the transition extension”, then the MDD/AIMDD device is considered a legacy device and may continue to be marketed. However, if a manufacturer is not intending to CE Mark to the MDR, then starting 26 May 2024, they will fail to continue to meet the requirements and no longer qualify as a legacy device.
Will Switzerland and the UK recognize the MDR transition extension?
Yes, both Swissmedic and the UK MHRA released announcements that they will recognize the MDR transition period extension granted under EU Regulation 2023/607.
Switzerland
Swissmedic has amended its regulation (MedDo and IvDO) to implement the MDR transition period and removal of the sell-off provision: HERE
United Kingdom
The MHRA’s announcement that it will recognize the MDR extension in the UK is available: HERE
The UK is made up of two territories.
- Northern Ireland: requires European CE Marking; therefore, the MDR transition extension went into immediate effect upon publication, as it did in the rest of Europe. No further action or statement was required from the MHRA related to this, as Northern Ireland is considered part of the European Single Market.
- Great Britain (England, Scotland, Wales): has a separate regulatory system (UKCA Marking). Due to a transitional provision, the MHRA allows CE Marked devices (legacy and MDR/IVDR CE Marked) onto the Great Britain market. The above-linked MHRA announcement states it will also recognize devices covered under the EU MDR extension, e.g., devices with MDD/AIMDD certificates that expired prior to 20 March 2023, but are now considered valid due to EU Regulation 2023/607.
For more information on the CE Marking acceptance dates in the UK, please read: UK MHRA Announcement: New Dates for UK Regulation & CE Marking and UKCA Marking: Fact Sheet for Medical Devices & IVDs

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Transition Comparision (Before & After) Chart
| Before | After |
|---|---|
| Legacy devices are subject to the MDR’s market surveillance, post-market surveillance, vigilance, and registration requirements | No change; these same requirements apply under the extension |
| Legacy devices may not undergo significant change to the intended purpose or design; otherwise, the device may be subject to MDR CE Marking | No change; these same requirements apply under the extension |
| If the MDD/AIMDD CE Marking certificate expired before 26 May 2024, that device is off the market unless the manufacturer was granted a derogation by the EU Competent Authorities or obtained MDR CE Marking | If the following conditions are met, MDD/AIMDD certificates that expired before 20 March 2023 will be considered active and the device may continue to be placed on the market: 1) The CE Certificate was valid on 26 May 2021, and 2) The Certificate was not withdrawn afterwards, and 3a) Before the CE Certificate expired, the manufacturer had a signed written agreement in place with the Notified Body (per MDR Section 4.3, second subparagraph, of Annex VII) and/or 3b) A Competent Authority had granted a derogation in accordance with MDR Article 59(1) or authorization under Article 97(1) |
| All MDD/AIMDD legacy devices must be MDR CE Marked by 26 May 2024 | The new MDR transition timeline for MDD/AIMDD legacy devices is now: – Class III and Class IIb implantable devices require MDR CE Marking by 31 December 2027* – Class I, IIa and IIb (all other) devices require MDR CE Marking by 31 December 2028** *Except sutures, staples, dental fillings, dental braces, tooth crowns, screws, wedges, plates, wires, pins, clips and connectors. The timeline for these devices is 31 December 2028 **Class I-self certified devices (non-Notified Body CE Marked) require a Declaration of Conformity that was legally drawn up prior to 26 May 2021 |
| Legacy device manufacturers were not required to lodge an application with a Notified Body in order to remain qualified as a legacy device | Manufacturers must, no later than 26 May 2024, have lodged an application with a Notified Body for that device, in order to retain its status as a legacy device |
| Legacy device manufacturers were not required to sign an agreement with a Notified Body in order to remain qualified as a legacy device | Manufacturers must, no later than 26 September 2024, have a written agreement in place with a Notified Body for that device, in order to retain its status as a legacy device |
| Legacy devices were not subject to MDR quality system requirements | Legacy devices are now required, no later than 26 May 2024, to comply with the MDR’s quality system requirements (Article 10(9)) NOTE: Class III implantable custom-made devices are exempt from this requirement |
| All custom-made devices must comply with the MDR as of its date of application (26 May 2021) in order to continue being placed on the market | Class III implantable custom-made devices are now eligible for an extended transition period until: 26 May 2026 NOTE: all other custom-made devices must still comply with the MDR by its date of application to be placed onto the market |
MDD/AIMDD legacy devices could no longer be made available or put into service after 26 May 2025 This deadline applied both to devices lawfully placed on the market before or after 26 May 2021 | MDD/AIMDD legacy devices may be made available or put into service indefinitely through the safe use of the device, i.e., the “sell-off” provision originally stipulated in MDR Article 120(4) has been removed |
IVDD legacy devices lawfully placed on the market before 26 May 2022, could no longer be made available or put into service after 26 May 2025 IVDD legacy devices lawfully placed on the market after 26 May 2022, could no longer be made available or put into service after: – 26 May 2026: Class D – 26 May 2027: Class C – 26 May 2028: Class B and Class A sterile | IVDD legacy devices may be made available or put into service indefinitely through the safe use of the device, i.e., the “sell-off” provision originally stipulated in IVDR Article 110(4) has been removed |


