I have conducted a literature/pulication review for all the medical devices we make. These are the centre point of of my 'Clinical Evaluation' (Word format) as part of my Technical File(s). The trouble is wrt post-market surveillance is that these tend to be at least a year old if not more - so it does not make much sense. Not really thought about competitor information, but shouldn't the post market surveillance be on your own products. I suppose if there was a problem with a competitors product it would be relevant, but this would be captured in a Device Alert (a MDA, Safety Notice or Recall in the UK - available on the MHRA site) of some form (i.e. a publication again).