i recently read about this case
http://cas-cdc-www02.cas-satj.gc.ca/IndexingQueries/infp_RE_info_e.php?court_no=T-1689-14&select_court=All
Full ruling is here:
https://decisions.fct-cf.gc.ca/fc-cf/decisions/en/item/306034/index.do
Judges ruling said PR was obtained by fraud and false...