RugbyWA has launched legal action against the ARU following the Western Force's controversial axing from the Super Rugby competition.
Following an arbitration process, the ARU on Friday declared its intention to discontinue the licence of the Perth-based team.
RugbyWA has lodged an appeal the the NSW Supreme Court and will know within the next week if it will come before the court.
Chief executive Mark Sinderberry is hopeful their appeal will be successful for all rugby fans in Western Australia.
"We've been given every encouragement by our legal team that it's certainly possible," Sinderberry told ABC Radio .
"We have a commitment to the game here in Western Australia to exhaust every possibility.
"We've got real concerns that there hasn't been a process and that there hasn't been any alternatives offered. The Australian Rugby Union as an organisation has a responsibility to the game. They've also got a responsibility to the people of Western Australia."
Australia is required to sacrifice one of its five Super Rugby participants as the regional governing body - South Africa, New Zealand, Australia and Argentina Rugby (SANZAAR) - reduces Super Rugby from 18 teams to 15 in a bid to cut costs and safeguard the viability of the competition.
The ARU's decision means Melbourne Rebels, the other Australian team in the firing line, appear to have earned a stay of execution.
But Western Force will not go down without a fight.
Western Australian rugby's state governing body said in a statement on Friday: "RugbyWA remains committed to pursuing every possible means to ensure the Western Force remains a Super Rugby team in Perth.
"RugbyWA is considering all options including bringing urgent proceedings in the Supreme Court of NSW, and legal action relating to the circumstances which led it to enter in the Alliance Agreement with the ARU."
| RUGBYWA STATEMENT | pic.twitter.com/Q6nRfPDqJe
— Western Force (@westernforce) August 11, 2017
In announcing its intention to axe Force, the ARU said: "Our decision to exit the Western Force has been guided primarily by financial outcomes.
"As we have reinforced throughout this process, there are commercial realities which are linked to declining on-field performance across our Super Rugby teams which has put Australian rugby in a position where it can no longer sustain five teams.
"Our immediate concern is to support the individuals at the Western Force through these difficult circumstances and we will deploy various ARU management staff to Western Australia to provide assistance to all players and staff."