This will have interesting effects for US patents that are practiced on AWS machines in Canada to serve client devices in the US.  All the steps of a method claim in a patent must be performed in the US to infringe, so choosing to use machines in Canada will create defenses for many extant US patent claims.<p>This only works for method claims, though. Device claims in patents are a different beast.<p>And of course, this isn&#x27;t new, but a AWS region in Canada will make the issue more prevalent.