Plant
Delphinium
37 US plant patents name this plant. 11 have expired, so those cultivars are free to propagate and sell. The next of the 26 still protected comes off patent on August 2, 2028.
Still under patent — 26 cultivars
Soonest to come off patent first. You may not propagate these for sale until the date shown.
- Crystal DelightPP20339Delphinium plant named ‘Crystal Delight’UNDER PATENTAugust 2, 2028
- Moon LightPP20340Delphinium plant named ‘Moon Light’UNDER PATENTAugust 2, 2028
- Sweet SensationPP20341Delphinium plant named ‘Sweet Sensation’UNDER PATENTAugust 2, 2028
- Morining SunrisePP20380Delphinium plant named ‘Morining Sunrise’UNDER PATENTAugust 2, 2028
- TessaPP23978Delphinium plant named ‘Tessa’UNDER PATENTMay 25, 2032
- CoadelchaPP27735Delphinium plant named ‘Coadelcha’UNDER PATENTJune 23, 2035
- CoadelflaPP27705Delphinium plant named ‘Coadelfla’UNDER PATENTJune 30, 2035
- CoadelbolPP27704Delphinium plant named ‘Coadelbol’UNDER PATENTJuly 1, 2035
- Red LarkPP29761Delphinium plant named ‘Red Lark’UNDER PATENTNovember 10, 2037
- ET DLP 17-10PP32993Delphinium plant named ‘ET DLP 17-10’UNDER PATENTJune 23, 2040
- ET DLP 17-11PP32994Delphinium plant named ‘ET DLP 17-11’UNDER PATENTJune 23, 2040
- ET DLP 17-03PP33009Delphinium plant named ‘ET DLP 17-03’UNDER PATENTJune 23, 2040
- ET DLP 17-14PP33010Delphinium plant named ‘ET DLP 17-14’UNDER PATENTJune 23, 2040
- COADELPNKPP33434Delphinium plant named ‘COADELPNK’UNDER PATENTOctober 22, 2040
- COADELBBLPP33435Delphinium plant named ‘COADELBBL’UNDER PATENTOctober 22, 2040
- COADELCHMOPP33436Delphinium plant named ‘COADELCHMO’UNDER PATENTOctober 22, 2040
- COADELPSURPP34158Delphinium plant named ‘COADELPSUR’UNDER PATENTDecember 1, 2041
- ET DLP 827PP34608Delphinium plant named ‘ET DLP 827’UNDER PATENTFebruary 14, 2042
- ET DLP 808PP34652Delphinium plant named ‘ET DLP 808’UNDER PATENTFebruary 14, 2042
- ET DLP 824PP34653Delphinium plant named ‘ET DLP 824’UNDER PATENTFebruary 14, 2042
- ET DLP 807PP34675Delphinium plant named ‘ET DLP 807’UNDER PATENTFebruary 14, 2042
- ET DLP 829PP34714Delphinium plant named ‘ET DLP 829’UNDER PATENTFebruary 14, 2042
- ET DLP 838PP34765Delphinium plant named ‘ET DLP 838’UNDER PATENTFebruary 14, 2042
- COADELSAMPP34477Delphinium plant named ‘COADELSAM’UNDER PATENTMarch 8, 2042
- Dellas 812PP36982Delphinium plant named ‘Dellas 812’UNDER PATENTFebruary 15, 2045
- Violets Are BluePP37102Delphinium plant named ‘Violets Are Blue’UNDER PATENTApril 30, 2045
Already in the public domain — 11 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.
- BarthirtyPP17339Delphinium plant named ‘Barthirty’PUBLIC DOMAINJune 6, 2025
- Delft BluePP14705Delphinium plant named ‘Delft Blue’PUBLIC DOMAINMay 13, 2023
- Coral SunsetPP14715Delphinium plant named ‘Coral Sunset’PUBLIC DOMAINMay 13, 2023
- Delga StamPP14152Delphinium plant named ‘Delga Stam’PUBLIC DOMAINSeptember 20, 2022
- DelgaalPP14341Delphinium plant named ‘Delgaal’PUBLIC DOMAINJanuary 9, 2022
- Dolce VitaPP13010Delphinium plant named ‘Dolce Vita’PUBLIC DOMAINApril 25, 2021
- Darwin's Blue IndulgencePP13011Delphinium plant named ‘Darwin's Blue Indulgence’PUBLIC DOMAINApril 25, 2021
- Darwin's Pink IndulgencePP13065Delphinium plant named ‘Darwin's Pink Indulgence’PUBLIC DOMAINNovember 16, 2020
- MèrelPP12321Delphinium plant named ‘Mèrel’PUBLIC DOMAINAugust 16, 2020
- West End BluePP11824Delphinium plant named ‘West End Blue’PUBLIC DOMAINMarch 8, 2019
- Plagu Light PurplePP11704Delphinium plant name `Plagu Light Purple`PUBLIC DOMAINSeptember 30, 2018
Botanically this is Delphinium. 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.