Genus
Artemisia
8 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 6 still protected comes off patent on October 31, 2031.
On the name: Filed as Artemisia. GBIF marks this name's backbone entry as unresolved; the genus itself is not in dispute.
Still under patent — 6 cultivars
Soonest to come off patent first. You may not propagate these for sale until the date shown.
- DueparethioPP23017Artemisia plant named ‘Dueparethio’UNDER PATENTOctober 31, 2031
- TNARTMSPP30968Artemisia plant named ‘TNARTMS’UNDER PATENTMay 29, 2038
- G18123PP33773Artemisia plant named ‘G18123’UNDER PATENTJune 22, 2041
- BalfernarcPP33774Artemisia plant named ‘Balfernarc’UNDER PATENTAugust 29, 2041
- BalfernlymPP33775Artemisia plant named ‘Balfernlym’UNDER PATENTAugust 29, 2041
- Silver LiningPP36888Artemisia plant named ‘Silver Lining’UNDER PATENTDecember 12, 2043
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.
- Golden PhoenixPP16046Artemisia plant named ‘Golden Phoenix’PUBLIC DOMAINOctober 4, 2023
- Oriental LimelightPP12788Artemisia plant named ‘Oriental Limelight’PUBLIC DOMAINAugust 16, 2020
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.