Genus
Deutzia
8 US plant patents have been granted in this genus. 1 is already in the public domain — anyone may propagate and sell it. The next of the 7 still protected comes off patent on December 2, 2028.
Still under patent — 7 cultivars
Soonest to come off patent first. You may not propagate these for sale until the date shown.
- KolmaspriPP20964Deutzia plant named ‘Kolmaspri’UNDER PATENTDecember 2, 2028
- MincreamPP25703Deutzia plant named ‘Mincream’UNDER PATENTDecember 3, 2033
- NCDX1PP25916Deutzia plant named ‘NCDX1’UNDER PATENTJanuary 22, 2034
- NCDX2PP28347Deutzia plant named ‘NCDX2’UNDER PATENTAugust 24, 2035
- Low 18PP30793Deutzia plant named ‘Low 18’UNDER PATENTJuly 30, 2038
- NCDX3PP36667Deutzia plant named ‘NCDX3’UNDER PATENTJune 17, 2044
- LISSTODELPP37129Deutzia plant named ‘LISSTODEL’UNDER PATENTApril 18, 2045
Already in the public domain — 1 cultivar
Most recently freed first. Anyone may propagate and sell this plant — though the name it is sold under may still be a live trademark.
- DuncanPP16098Deutzia plant named ‘Duncan’PUBLIC DOMAINAugust 27, 2024
A patent expiring frees the plant, and its cultivar name comes with it — cultivar names cannot be trademarked, so they are always free to use. What it does not free is any brand name the plant is marketed under. Those are trademarks and renew indefinitely.