I believe from the article that you linked that the case is still before the High Court and so he has not lost yet.
I wonder would the case have been better made as an instance of identity theft?
Also while you are accurate in saying that the Tánaiste is equivalent to the Vice President in U.S. terms, because they are the deputy head of government. The same being true with respect to Taoiseach. I would like to point out that they are not the same positions. While the U.S. President is commander in chief of the U.S. military, the Taoiseach is not the command in chief in Ireland – that falls to the Uachtarán (the President).
Tánaiste = Deputy Prime Minister
Taoiseach = Prime Minister
Uachtarán = President
The Irish gov't wasn't spending enough ad dollars for Google to care.