Thanks for that information. I had not known that was a part of CUSMA. From reading a Canadian law firm's analysis of the changes (https://www.blakes.com/insig

Thanks for that information. I had not known that was a part of CUSMA. From reading a Canadian law firm's analysis of the changes (https://www.blakes.com/insights/bulletins/2020/ip-post-nafta-what-cusma-coming-into-force-means-f https://www.blakes.com/insights/bulletins/2020/ip-post-nafta...), Canada has 2.5 years (until the end of 2023) to enact this change. This can also be seen in the link you provided in Article 20.89.4.c. (The link I provided mislabels this as Article 20.90. or perhaps refers to an alternate draft of the document.) It appears that Canada has not enacted this law just yet, although I may be mistaken about that. Depending on when they do, Courant's work may or may not enter the public domain in 2023, although it seems more likely than not that the copyright term will be extended by then.