Genus
Ageratum
15 US plant patents have been granted in this genus. 10 are already in the public domain — anyone may propagate and sell them. The next of the 5 still protected comes off patent on January 3, 2028.
Still under patent — 5 cultivars
Soonest to come off patent first. You may not propagate these for sale until the date shown.
- AgadeftPP20479Ageratum plant named ‘Agadeft’UNDER PATENTJanuary 3, 2028
- AgrosPP21626Ageratum plant named ‘Agros’UNDER PATENTJuly 9, 2029
- AgbapurPP21565Ageratum plant named ‘Agbapur’UNDER PATENTSeptember 28, 2029
- AgbabulPP21445Ageratum plant named ‘Agbabul’UNDER PATENTSeptember 29, 2029
- AgerboyumaPP36798Ageratum plant named ‘Agerboyuma’UNDER PATENTOctober 16, 2044
Already in the public domain — 10 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.
- AgpatbicpuliPP18186Ageratum plant named ‘Agpatbicpuli’PUBLIC DOMAINMay 18, 2026
- AgbicPP17721Ageratum plant named ‘Agbic’PUBLIC DOMAINOctober 28, 2025
- AgalibPP17117Ageratum plant named ‘Agalib’PUBLIC DOMAINAugust 19, 2025
- Sage85015PP17417Ageratum plant named ‘Sage85015’PUBLIC DOMAINJuly 3, 2025
- Sage80091PP17184Ageratum plant named ‘Sage80091’PUBLIC DOMAINJune 27, 2025
- Sage00591PP17344Ageratum plant named ‘Sage00591’PUBLIC DOMAINJune 6, 2025
- AgrosamtisPP15631Ageratum plant named ‘Agrosamtis’PUBLIC DOMAINJune 25, 2024
- AgsantisPP15289Ageratum plant named ‘Agsantis’PUBLIC DOMAINJanuary 10, 2023
- AgmontisPP15301Ageratum plant named ‘Agmontis’PUBLIC DOMAINJanuary 10, 2023
- AgetisPP15627Ageratum plant named ‘Agetis’PUBLIC DOMAINJuly 11, 2022
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.