Plant
Thunbergia
12 US plant patents name this plant. 4 have expired, so those cultivars are free to propagate and sell. The next of the 8 still protected comes off patent on February 9, 2031.
Still under patent — 8 cultivars
Soonest to come off patent first. You may not propagate these for sale until the date shown.
- NEBTHU 007PP23165Thunbergia plant named ‘NEBTHU 007’UNDER PATENTFebruary 9, 2031
- WesthushiyelPP26615Thunbergia plant named ‘Westhushiyel’UNDER PATENTApril 13, 2034
- VOLTHU 7897PP29718Thunbergia plant named ‘VOLTHU 7897’UNDER PATENTMay 5, 2037
- VOLTHU 7828PP29719Thunbergia plant named ‘VOLTHU 7828’UNDER PATENTMay 5, 2037
- VOLTHU 7887PP29732Thunbergia plant named ‘VOLTHU 7887’UNDER PATENTMay 5, 2037
- VOLTHU 7898PP29733Thunbergia plant named ‘VOLTHU 7898’UNDER PATENTMay 5, 2037
- DL1501PP30215Thunbergia plant named ‘DL1501’UNDER PATENTJuly 6, 2037
- VOLTHU 9327PP33361Thunbergia plant named ‘VOLTHU 9327’UNDER PATENTSeptember 18, 2040
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.
- Sumthun 02PP17962Thunbergia plant named ‘Sumthun 02’PUBLIC DOMAINFebruary 17, 2026
- Lemon StarPP14371Thunbergia plant named ‘Lemon Star’PUBLIC DOMAINApril 1, 2022
- Orange WonderPP14767Thunbergia plant named ‘Orange Wonder’PUBLIC DOMAINApril 1, 2022
- DaniellaPP12893Thunbergia plant named ‘Daniella’PUBLIC DOMAINMarch 4, 2021
Botanically this is Thunbergia. 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.