The government rejected that argument during two days of legal proceedings in Belfast High Court, PA reported.
But the judge, in his written ruling, judge said: "I consider the characterisation of the subject matter of these proceedings as inherently and unmistakably political to be beyond plausible dispute".
"Virtually all of the assembled evidence belongs to the world of politics, both national and supra-national".
Mr Coveney added that those who dismiss the threat of a disorderly Brexit are "not being fully upfront about the challenges and complexity of no deal". His son was murdered by loyalist paramilitaries in 1997.
The UK Government said it was "disappointed" by the decision and would be appealing to the UK's Supreme Court.
The question: could a Northern Irish backstop break the Brexit deadlock?
"We've got to come out whole and entire and solve the problems of the Northern Ireland border and I am absolutely certain that we can do that".
Any appeal would first have to be heard by the Court of Appeal in Belfast.
The risk of a no-deal departure increased under Johnson, who threatened to leave the European Union on October 31, regardless of whether an agreement was reached, and the British government prepared the six-page classified document to prepare for potential problems under that scenario.
"We want an agreement but we are aware that an agreement without a backstop wouldn't work", the new head of the European Parliament, David Sassoli, told a news conference in Brussels.
The move backfired and emboldened lawmakers to defy him in Parliament. But if Boris Johnson hadn't suspended Parliament, would he have had a better chance of getting a general election approved? He also ousted rebellious Conservative lawmakers, including former Cabinet ministers and Winston Churchill's grandson.
Mr Johnson final yr reportedly steered additionally constructing a bridge throughout the English Channel to attach the United Kingdom and France.
This judgement will also be challenged in the UK's Supreme Court.