Plant
Polemonium
10 US plant patents name this plant. 4 have expired, so those cultivars are free to propagate and sell. The next of the 6 still protected comes off patent on September 11, 2027.
Still under patent — 6 cultivars
Soonest to come off patent first. You may not propagate these for sale until the date shown.
- Touch of ClassPP19768Polemonium plant named ‘Touch of Class’UNDER PATENTSeptember 11, 2027
- Heaven ScentPP20214Polemonium plant named ‘Heaven Scent’UNDER PATENTJanuary 30, 2028
- PolelodgePP28653Polemonium plant named ‘Polelodge’UNDER PATENTApril 29, 2036
- DUNKALPP31787Polemonium plant named ‘DUNKAL’UNDER PATENTMay 3, 2039
- Golden FeathersPP35067Polemonium plant named ‘Golden Feathers’UNDER PATENTSeptember 6, 2042
- Hurricane RidgePP35878Polemonium plant named ‘Hurricane Ridge’UNDER PATENTApril 10, 2043
Already in the public domain — 4 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.
- PolbressPP15367Polemonium plant named ‘Polbress’PUBLIC DOMAINJune 23, 2023
- Stairway to HeavenPP15187Polemonium reptans named ‘Stairway to Heaven’PUBLIC DOMAINAugust 7, 2022
- Snow and SapphiresPP13441Polemonium plant named ‘Snow and Sapphires’PUBLIC DOMAINDecember 20, 2021
- BrisePP9781Polemonium plant named Brise d'AnjouPUBLIC DOMAINJune 28, 2015
Botanically this is Polemonium. A patent expiring frees the plant, and its cultivar name with it — cultivar names cannot be trademarked. Any brand name it is sold under is a separate thing and may still be owned.