Evangelos Marinakis is suing Crystal Palace for a banner unfurled by their fans depicting the Nottingham Forest owner holding a gun to midfielder Morgan Gibbs-White's head.
Marinakis' lawyers lodged the defamation claim in the High Court on Monday, with CPFC Limited listed as one of the two defendants.
The banner, seen during a 1-1 Premier League draw between the two sides at Selhurst Park last August, read: "Mr Marinakis is not involved in blackmail, match-fixing, drug trafficking or corruption."
Marinakis has consistently denied any wrongdoing in relation to such allegations.
@ChrisCowlin Same old. I predicted the correct score on super6. I new what would happen. Unless you're man city. Arsenal or liverpool its a waste of time anyway. They are miles ahead of all the others
@ChrisCowlin U said this when mourhinio came then you said it when conte came who also had a good start last season now you're saying the same thing again we aint doubters were just being realistic