Genus
Crossandra
2 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 1 still protected comes off patent on November 30, 2042.
Still under patent — 1 cultivar
Soonest to come off patent first. You may not propagate these for sale until the date shown.
- DocroswatPP35301Crossandra plant named ‘Docroswat’UNDER PATENTNovember 30, 2042
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.
- DianePP4805Crossandra infundibuliformis `Diane`PUBLIC DOMAINApril 18, 2000
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.