Genus
Stokesia
11 US plant patents have been granted in this genus. 2 are already in the public domain — anyone may propagate and sell them. The next of the 9 still protected comes off patent on December 6, 2027.
Still under patent — 9 cultivars
Soonest to come off patent first. You may not propagate these for sale until the date shown.
- Purple PixiePP19833Stokesia plant named ‘Purple Pixie’UNDER PATENTDecember 6, 2027
- MELS BLUEPP23090Stokesia plant named ‘MELS BLUE’UNDER PATENTMay 23, 2031
- DivinityPP26164Stokesia laevis plant named ‘Divinity’UNDER PATENTMay 8, 2033
- SynstokharPP28305Stokesia plant named ‘Synstokhar’UNDER PATENTFebruary 1, 2036
- Mega MelsPP32107Stokesia plant named ‘Mega Mels’UNDER PATENTMay 20, 2039
- Mini MelsPP32136Stokesia plant named ‘Mini Mels’UNDER PATENTMay 20, 2039
- STAM01PP36064Stokesia plant named ‘STAM01’UNDER PATENTSeptember 8, 2043
- RiptidePP36168Stokesia plant named ‘Riptide’UNDER PATENTNovember 29, 2043
- WhitecapsPP36726Stokesia plant named ‘Whitecaps’UNDER PATENTApril 16, 2044
Already in the public domain — 2 cultivars
Most recently freed first. Anyone may propagate and sell these plants — though the name it is sold under may still be a live trademark.
- ColorwheelPP12718Stokesia laevis plant named ‘Colorwheel’PUBLIC DOMAINNovember 28, 2020
- Purple ParasolsPP10660Stokesia plant named `Purple Parasols`PUBLIC DOMAINMarch 31, 2017
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.