Paul Price appeared at Chichester Crown Court yesterday to plead not guilty to the charges.
The 52-year-old fencing company owner arrived in court in jeans, a white shirt and a blue blazer.
The hearing lasted just fifteen minutes.
Paul was bailed and will face trial in November.
He was first charged last November in connection with the alleged attack, which is said to have occurred in Worthing in the early hours of the morning.
Meanwhile Judge Christopher Parker QC warned him: "I am obliged to tell you that if you do not attend the next hearing or for trial not only will a warrant be issued for your arrest, the trial may take place in your absence."
Katie, who calls Paul, dad, has been very close with him in the past after she took his surname when he married her mum, Amy.
At the time of his arrest a source close to Katie said: "She is obviously very upset.
"This has come as a shock as this is the man who has been her father."