Genus
Calendula
17 US plant patents have been granted in this genus. 1 is already in the public domain — anyone may propagate and sell it. The next of the 16 still protected comes off patent on September 5, 2034.
Still under patent — 16 cultivars
Soonest to come off patent first. You may not propagate these for sale until the date shown.
- 20123-5DPP26664Calendula plant named ‘20123-5D’UNDER PATENTSeptember 5, 2034
- 20124-30DPP26663Calendula plant named ‘20124-30D’UNDER PATENTSeptember 6, 2034
- 20124-RPP26718Calendula plant named ‘20124-R’UNDER PATENTSeptember 6, 2034
- 20123-72DPP26717Calendula plant named ‘20123-72D’UNDER PATENTDecember 13, 2034
- 20123-107DPP26804Calendula plant named ‘20123-107D’UNDER PATENTDecember 19, 2034
- 20123-57DPP26980Calendula plant named ‘20123-57D’UNDER PATENTJanuary 16, 2035
- 20123-29DPP26845Calendula plant named ‘20123-29D’UNDER PATENTJanuary 17, 2035
- 20123-91DPP26981Calendula plant named ‘20123-91D’UNDER PATENTJanuary 27, 2035
- KERCALSUNPP29994Calendula plant named ‘KERCALSUN’UNDER PATENTJanuary 25, 2037
- CDAZ0001PP30188Calendula plant named ‘CDAZ0001’UNDER PATENTJuly 7, 2037
- CDAZ0002PP30189Calendula plant named ‘CDAZ0002’UNDER PATENTJuly 7, 2037
- CDAZ0003PP30518Calendula plant named ‘CDAZ0003’UNDER PATENTJuly 10, 2037
- KercaldivaPP30517Calendula plant named ‘Kercaldiva’UNDER PATENTSeptember 14, 2037
- KercaldiyellPP30869Calendula plant named ‘Kercaldiyell’UNDER PATENTJuly 12, 2038
- KERCALTANPP31157Calendula plant named ‘KERCALTAN’UNDER PATENTOctober 25, 2038
- KercaldivimpPP32626Calendula plant named ‘Kercaldivimp’UNDER PATENTApril 9, 2040
Already in the public domain — 1 cultivar
Most recently freed first. Anyone may propagate and sell this plant — though the name it is sold under may still be a live trademark.
- Sumden 01PP15034Calendula plant named ‘Sumden 01’PUBLIC DOMAINSeptember 6, 2023
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.