Two new justices have been added to the roster of Canada's top court.

Justices Louise Charron and Rosalie Abella were sworn in to the Supreme Court of Canada during ceremonies in Ottawa Monday morning.

As the pair was being sworn in, demonstrators gathered outside the court to voice their dissent.

There are reports approximately 25 demonstrators marched with signs accusing the appointees of championing a radical feminist agenda.

Abella and Charron, both of whom served on the Ontario Court of Appeal, were named to the high court by Prime Minister Paul Martin on Aug. 30, after a new, highly-criticized vetting procedure.

Championed by Martin as a more transparent way of appointing high court judges, a committee of MPs and legal experts reviewed the prime minister's suggestions.

Critics said the procedure amounted to little more than rubber stamp.

The appointment of the two new appointees brings the nine-member judiciary up to full strength, following the departures of Louise Arbour and Frank Iacobucci.

Iacobucci has since been named the University of Toronto's interim president, while Arbour has taken a post as United Nations High Commissioner for Human Rights in Geneva.

Back in Ottawa, the top court jurists will hit the ground running when the next session begins with a landmark hearing on same-sex marriage.