From the CMDR:
APPLICATION
2. These Regulations apply to
(a) the sale and advertising for sale of a medical device; and
(b) the importation of a medical device for sale or for use on individuals, other than importation for personal use
As soon as active selling and distribution have ceased, I have always alowed the MDL to lapse at the next renewal period, regardless of its support requirements. By my interpretation, this applies even in the case of products that require support in terms of repair parts and service, software patches, etc. Complaints, recall, MPR, etc. under the regulations would still apply even after the MDL expired. Non-repair parts such as accessories and consumables may require an MDL.
What is not clear to me is the requirement to maintain ISO13485 for post-end of sales servicing in these cases. Potentailly a gap in the regulation, but not the first one that's been raised. I would think the manufacturer would want to keep the "certified" servicing processes in place as a matter of due dilligence if nothing else.
I'd be interested if there were other perspectives on this approach.