There is NO definition for EX JURIS interestingly, in The Dictionary of Canadian Law or Black's Law 9th..there is however one for EX JURE in Black's 9th- EX JURE: Of or by legal right.
..notice, LEGAL right ;)
Printed copy · Anthology Volume 1, page 1224Printed copy from The Tender For Law Anthology, Volume 1, page 1224 (printed 14 June 2014). Added by this site; not part of the Facebook export.