Genus
Hardenbergia
4 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 3 still protected comes off patent on June 10, 2029.
Still under patent — 3 cultivars
Soonest to come off patent first. You may not propagate these for sale until the date shown.
- RambosprayPP21249Hardenbergia violacea plant named ‘Rambospray’UNDER PATENTJune 10, 2029
- HB1.08PP25657Hardenbergia violacea plant named ‘HB1.08’UNDER PATENTOctober 2, 2033
- HB2PP28682Hardenbergia violacea plant named ‘HB2’UNDER PATENTSeptember 21, 2036
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.
- EasyPP10117Hardenbergia plant named `Free `N` Easy`PUBLIC DOMAINMay 16, 2016
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.