BANK of Ireland has claimed the four adult children of solicitor Brian O'Donnell are illegally occupying the family's luxury home in Co Dublin.
Once valued at €30m, the house at Gorse Hill on Vico Road, Killiney in Dublin, now has a €6-€7m price tag.
The bank is pursuing Mr O'Donnell and his wife Dr Mary Patricia O'Donnell for €75m, while the children – Alexandra, Blake, Bruce and Blaise – have challenged the appointment by the bank of a receiver over the home.
They have also moved to challenge mortgages and guarantees undertaken by an Isle of Man company, Vico Ltd, which owns the Gorse Hill house.
The bank claims the Isle of Man company entered into separate mortgages and charges in 2006 in favour of Bank of Ireland over the property.
It is also alleged the company entered into a number of guarantees relating to debt owed by the O'Donnell parents.
In challenging the bank's bid to take possession of the home, the children allege the various mortgage deeds and guarantees given by Vico Ltd over the home were unsound as they were allegedly given as a result of "undue pressure".
Mr Justice Peter Kelly was asked to set out a timetable for the exchange of legal documents.
Prionsias O Maolachain, counsel for the four children, said his clients had the services of a small legal firm, not "an office floor" of solicitors, and requested they be given until June 3 to provide witness statements.
Cian Ferriter, counsel for the bank, said that was too much time as the case initially began in July 2012.
Mr Justice Kelly directed witness statements be provided by May 23.