The World Trade Organization has taken up Catalyst Papers case, and ruled against duties on supercalendered paper.
As a result, the United States rescinded the duties last week, and will be refunding all duties collected since August 2015.
Canada complained to the WTO that the American assertion that paper production is somehow subsidized was wrong, and a WTO panel agreed.
Chrystia Freeland, the Minister of Foreign Affairs said Canada and the United States depend on each other for their mutual prosperity, and that relationship is key for the Canadian forestry industry workers.