The case was launched by a Bangladeshi detainee on Nauru who was brought to Australia for treatment after she experienced health issues during pregnancy.
She gave birth to her daughter in Brisbane, and brought the challenge to avoid being returned to the detention centre.
Lawyers for the woman argued that it was illegal for the Australian Government to fund and operate detention centres in a third country.
During the case the Government changed the law to close a loophole in the funding arrangements, which it feared could be undermined by the challenge.
