Part IV
Enforcement of criminal judgements
CHAPTER I
Enforcement of foreign criminal judgements
Article 96
Specific requirements
1. Any request for the enforcement in Portugal of a foreign criminal judgement shall be admissible only subject to the general requirements provided for in this law, as well as the following requirements :
b) if the sentence was pronounced during a trial in the absence of the sentenced person, the later must have been given the legal possibility of requesting a new trial or introducing an appeal ;
Fair trial standards
Trials in absentia
Appeal relating to a decision involving an issue that would significantly affect the fair and expeditious conduct of the proceedings or the outcome of the trial - ICC proceedings
EDIT.