Liverpool beat Chelsea in the semi-final second leg on Merseyside with a disputed winner from Luis Garcia but the Portuguese coach will never accept the ball crossed the line.
Mourinho's view that Garcia's goal should not have stood was later supported by the use of missile technology and the fact that it gave Liverpool a 1-0 aggregate victory still rankles with the Chelsea coach.
The two sides meet once more in the Champions League at Anfield tonight with Mourinho believing that goalline technology is a must to prevent such mistakes in future.
FIFA have been experimenting with a micro-chipped adidas ball at the Under-17 World Championships and the manufacturers claim it will resolve any disputes.
'Using simple technology we could put a stop to wrong decisions' said Mourinho. 'The use of chip technology in the ball - which works through the transmission of a sound signal - would confirm if the ball crossed the line or not.
'It is so simple to resolve and yet these errors keep happening. It is not a case of blaming referees it's not about demanding 20/20 vision or supersonic reactions from the referees' assistants.
'But in this multi-million pound business it is imperative that pivotal decisions stand up to scrutiny.'
Mourinho has learned to live with the fact that Garcia's goal meant his side stayed at home while Liverpool went on to beat AC Milan in a memorable final.
He added: 'Liverpool didn't score in the semi-final against us but I accept they beat us. They played in the final and we stayed at home so of course I accept it.
'I was upset at that time but not any more. They beat us but they didn't score. I will say that for all my life but it doesn't mean I am sad.
'There are certain highlights in your career that you never forget and I won't forget the goal nobody saw.
'In five matches we have beaten them three times they beat us once and we drew once. The game in Anfield where everybody says they beat us was I think a zero-zero draw.
'It was a great atmosphere last season but it was the same in the Premiership at Anfield and we beat them. The person who was maybe more influenced by the atmosphere was the linesman not the players.'
Mourinho's dig at Roman Slysko the assistant referee who indicated Garcia's clipped shot had cleared the line at Anfield stands by his decision.
He said: 'I did not enjoy being the centre of attention. I never spoke to Mourinho or anyone from Chelsea about the goal but I do not expect to do any of their games in Europe this season.
'I don't think the UEFA referees committee would send us. It could be taken as a provocation and too controversial.'
Slysko added that he would have liked goalline technology at Anfield that night if only to prove to Mourinho that he made the right decision.
'It would have saved a lot of arguments' he said. 'But for me the decision I made was and still is correct. I am not sorry about it.'