Using Canadian-invented patents granted by the United States Patent and Trademark Office during the period between 1995 and 2014, we investigate how ownership of Canadian inventions varies across time and by technology, geographic region, quality of invention, and the presence of superstar firms. Our findings show that the gap between Canadian-invented and Canadian-owned technologies has grown since 1995, and that an increasing number of Canadian-invented patents are owned by foreign, primarily US, firms. In terms of technical areas, Canadian-owned patents in biotechnology have declined and there has been sharp growth in both Canadian- and foreign-owned patents in information technology and telecom. Approximately 60% of Canadian-invented patents originate from Toronto, Ottawa-Gatineau, Montreal, Vancouver, Kitchener-Cambridge-Waterloo (KCW), and Calgary. The quality of Canadian-invented patents increases over time, in part because the number of unassigned patents declines. The quality of foreign-owned patents is higher than the quality of Canadian-owned patents in all CMAs except KCW. At the firm level, while Blackberry and Nortel are responsible for a disproportionate number of Canadian-owned patents, the ownership of foreign-owned patents is more widely distributed. Our findings point to where Canadian innovation vulnerabilities are most severe, where they are worsening, and where there is cause for hope.