Charlton manager Iain Dowie has been served with the particulars of the writ issued by Crystal Palace.
Jordan (left) was left fuming by Dowie's appointment at Charlton
Dowie is being sued by Eagles chairman Simon Jordan for fraudulent representation after leaving Palace, then taking over at the Addicks.
Jordan claims he released Dowie in order to allow him to be reunited with his family in the north west.
"The matter is being dealt with by the club lawyers," said Charlton chief executive Peter Varney.
Dowie had a compensation clause in his contract which meant if he left for another club they would have to pay Palace £1m.
Varney added: "For legal reasons we cannot make any further comment at this stage.
"But we have noted the further derogatory comments made by Simon Jordan at a Crystal Palace press conference this week both in relation to Iain Dowie and our football club."
A court representative tried to serve Dowie with the claim during the media conference to unveil him as new boss at The Valley but he was turned away.
He completed his legal obligation later in the afternoon.
Palace named Peter Taylor as Dowie's replacement earlier this week.