Paedophile Maurice Van Ryn returns to court on Friday.
In March, the self-confessed child rapist applied for special leave to appeal against his increased sentence in the High Court of Australia.
The matter is listed for oral argument on October 14. This involves each side being allocated 20 minutes to convince two or three judges to grant or refuse special leave to appeal.
Van Ryn is serving a minimum 13 years and six months for multiple counts of child sexual abuse and is not eligible for parole until June 2028.