Fifteen applications have now been lodged with the High Court in Belfast to challenge the British government's controversial legacy legislation after it became law.
Branded the 'Bill of Shame' by opponents, the contentious legislation received royal assent on Monday and has now passed into law.
Although opposed by people from all community backgrounds, Secretary of State Chris Heaton Harris has insisted that the legislation "contains finely balanced political and moral choices" and urged the Irish government to support the recently established Independent Commission for Reconciliation and Information Recovery (ICRIR).
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The Irish government had previously voiced its opposition to the legislation and Taoiseach Leo Varadkar has said legal action would be considered if the bill was enacted.
The new laws will end all inquests and civil cases linked to the Troubles.
Immunity from prosecution will also be offered in some cases while ICRIR the will oversee the handling of all conflict related cases going forward.
Relatives of some of those killed say they will not co-operate with the new body.
It is understood six legal firms have lodged challenges on behalf on 15 clients so far.
A review is expected to take place on Wednesday.
Martina Dillon, whose husband Seamus Dillon was shot dead by the LVF near Dungannon in 1997, slammed the new laws.
"Every day my heart aches and yearns for my husband and the trauma of his killing has been exacerbated by this law," she said.
"Truth and justice are not much to ask, we shouldn't have to fight for decades to get it.
"I will fight this oppressive legislation in my husband's memory and in solidarity with other victims having their rights denied."
Ms Dillon said the "the clock is ticking for victims" and spoke of her hope that "the courts will treat this with urgency".
John McEvoy was seriously injured during a loyalist gun attack more than 30 years ago.
“The past is still the present, I narrowly escaped death and live with the impact of that gun attack every day," he said.
"As victims we have been affected in different ways, but we all stand to lose out by this law which grossly denies us our rights, that’s why we’ve come together to challenge it.
"We are determined to get answers and accountability, we won't stop fighting until that happens.”
Solicitor Gavin Booth, of Phoenix Law, said his clients are "steadfast in their commitment to achieving justice for all victims of the conflict through this legal challenge.
"This Act represents a clear departure from the rule of law and is a significant interference in the justice system by denying victims access to the courts," he said.
"These families deserve better from the UK government.”
Grainne Teggart, from Amnesty International, said: "This heinous Act of wrong must not stand, it is now over to the courts to right this historic wrong."
Mr Heaton-Harris said: “Now that the legislation has become law, the UK Government will do all it can to support the ICRIR, consistent with its operational independence, as it establishes itself and seeks to deliver effectively for victims and families.
"I hope that others, including the Irish Government, can do the same.”