Genus
Nierembergia
10 US plant patents have been granted in this genus. 3 are already in the public domain — anyone may propagate and sell them. The next of the 7 still protected comes off patent on December 2, 2026.
Still under patent — 7 cultivars
Soonest to come off patent first. You may not propagate these for sale until the date shown.
- SunniparihoPP19103Nierembergia plant named ‘Sunnipariho’UNDER PATENTDecember 2, 2026
- KLENC06134PP19840Nierembergia plant named ‘KLENC06134’UNDER PATENTDecember 17, 2027
- KLENC07344PP19880Nierembergia plant named ‘KLENC07344’UNDER PATENTMarch 24, 2028
- SunnicopadibuPP19689Nierembergia plant named ‘Sunnicopadibu’UNDER PATENTMarch 25, 2028
- SunnicopahoPP20871Nierembergia plant named ‘Sunnicopaho’UNDER PATENTSeptember 22, 2028
- IntasunnipabuPP20854Nierembergia plant named ‘Intasunnipabu’UNDER PATENTNovember 21, 2028
- USNRB1201PP21662Nierembergia plant named ‘USNRB1201’UNDER PATENTDecember 9, 2029
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.
- SunniparibuPP16406Nierembergia plant named ‘Sunniparibu’PUBLIC DOMAINJuly 1, 2024
- SunniparisobuPP16394Nierembergia plant named ‘Sunniparisobu’PUBLIC DOMAINJune 23, 2024
- SunnicobuPP13934Nierembergia plant named ‘Sunnicobu’PUBLIC DOMAINJuly 1, 2019
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.