The High Court has ruled that the verdict of unlawful killing will be available to the jury in the Stardust Inquest.
48 people died following the nightclub fire in Artane in Dublin in 1981. 128 others were injured in the Valentine's disco.
Most of the victims were aged between 18 and 25 and came from Artane, Kilmore and the Greater Coolock area.
In 2019 new inquests were ordered into the deaths.
But they were delayed after the Stardust's former manager Eamon Butterly brought the court challenge, arguing the verdict shouldn't be open to the jury.
Antoinette Keegan, who lost two sisters in the blaze, has welcomed the ruling, saying it will allow fresh inquests into the deaths to now go ahead;
"We're happy now that we can actually proceed now, our legal team is going to be writing to the coroner today and they're going to be asking for the coroner to set up a preliminary hearing for the legal team and the families to set down a date now so that we can actually with the inquest."