Plant
Helianthus
10 US plant patents name this plant. 3 have expired, so those cultivars are free to propagate and sell. The next of the 7 still protected comes off patent on November 20, 2033.
Still under patent — 7 cultivars
Soonest to come off patent first. You may not propagate these for sale until the date shown.
- Double WhammyPP25494Helianthus plant named ‘Double Whammy’UNDER PATENTNovember 20, 2033
- Autumn GoldPP30117Helianthus plant named ‘Autumn Gold’UNDER PATENTOctober 10, 2037
- SUR67-1PP31819Helianthus plant named ‘SUR67-1’UNDER PATENTFebruary 12, 2039
- TMSNBLEV01PP31423Helianthus plant named ‘TMSNBLEV01’UNDER PATENTMarch 8, 2039
- TMSNBLEV16-1PP33172Helianthus plant named ‘TMSNBLEV16-1’UNDER PATENTSeptember 23, 2040
- BullHelidec 0201PP33506Helianthus plant named ‘BullHelidec 0201’UNDER PATENTNovember 12, 2040
- DHELSOSKBBPP36802Helianthus plant named ‘DHELSOSKBB’UNDER PATENTDecember 4, 2044
Already in the public domain — 3 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.
- SLG DS 05PP18654Helianthus plant named ‘SLG DS 05’PUBLIC DOMAINJune 29, 2026
- First LightPP13150Helianthus plant named ‘First Light’PUBLIC DOMAINJuly 16, 2021
- Low DownPP13197Helianthus plant named ‘Low Down’PUBLIC DOMAINJuly 16, 2021
Botanically this is Helianthus. 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.