Canada - Patent No: 1992 on 23 Sep 2004
Application No: 97-1177 on 4 Nov 1997
Rights surrendered on September 23, 2016.
Breeder: Raymond J. Evison, Raymond J. Evison, Ltd., Channel Islands, United Kingdom; Mogens N. Olesen, Poulsen Roser International S.A.R.L., Gaillac, France
'Evijohill' originated from a mutation of an unknown clematis cultivar. The selection was made in 1994 in the Channel Islands.
New Zealand - Patent No: 2649 on 14 Mar 2008
United States - Patent No: PP 12,912 on 3 Sep 2002
VIEW USPTO PATENTApplication No: 09/219,425 on 23 Dec 1998