See also:
1 Background to the case: eulawanalysis.blogspot.com/2018/11/scotch…
2 Legal arguments on the issues: eulawanalysis.blogspot.com/2018/01/can-ar…
2 The opinion rejects the UK govt's inadmissibility arguments - ie the case is not hypothetical. Reflects deference usually shown to national courts' assessment.
a) it must be officially notified
b) it must follow national constitutional requirements - AG suggests parliamentary authorisation (Act of Parl or motion?) but that's surely up to UK law to determine in detail
c) time limit of two years
d) good faith/sincere cooperation - presumably to protect against withdrawing and notifying again to extend the 2-year time limit
Blog post soon