The issue arose during patriation debates, after the Supreme Court ruled in the Patriation Reference that there is a constitutional convention requiring "a substantial degree of provincial consent" for amendments to the Constitution of Canada.
On April 7, 1982, the Quebec Court of Appeal answered in the negative.
By that time, the Canada Act 1982 had already been passed by the UK Parliament, though not proclaimed in force.
On April 13 the Attorney General of Quebec appealed to the Supreme Court of Canada, but on April 17 the Canada Act 1982 was proclaimed in force by the Queen.
On December 6 the court rendered judgement, upholding the opinion of the Quebec Court of Appeal that Quebec did not have a veto by constitutional convention.