Plant
Primula
27 US plant patents name this plant. 8 have expired, so those cultivars are free to propagate and sell. The next of the 19 still protected comes off patent on January 17, 2028.
Still under patent — 19 cultivars
Soonest to come off patent first. You may not propagate these for sale until the date shown.
- ThirtyonePP20220Primula plant named ‘Thirtyone’UNDER PATENTJanuary 17, 2028
- K 74PP22674Primula plant named ‘K 74’UNDER PATENTMarch 10, 2031
- K 72PP22711Primula plant named ‘K 72’UNDER PATENTMarch 10, 2031
- KERBELREDPP24691Primula plant named ‘KERBELRED’UNDER PATENTOctober 11, 2032
- K22PP24356Primula plant named ‘K22’UNDER PATENTOctober 17, 2032
- HAK-P-01PP26163Primula plant named ‘HAK-P-01’UNDER PATENTJune 1, 2034
- HAK-P-02PP26188Primula plant named ‘HAK-P-02’UNDER PATENTJune 8, 2034
- KERBELGOLDIEPP31143Primula vulgaris ‘KERBELGOLDIE’UNDER PATENTAugust 7, 2038
- KERBELCARMENPP31225Primula vulgaris ‘KERBELCARMEN’UNDER PATENTAugust 7, 2038
- KERBELBLICPP32385Primula plant named ‘KERBELBLIC’UNDER PATENTAugust 27, 2039
- KERPOLILAPP34257Primula plant named ‘KERPOLILA’UNDER PATENTAugust 16, 2041
- KERPOLSOPINPP34258Primula plant named ‘KERPOLSOPIN’UNDER PATENTAugust 16, 2041
- IFPROBPP34900Primula plant named ‘IFPROB’UNDER PATENTJuly 27, 2042
- KERBELRIPPP36020Primula plant named ‘KERBELRIP’UNDER PATENTAugust 21, 2043
- KERANNAWITPP36037Primula plant named ‘KERANNAWIT’UNDER PATENTAugust 21, 2043
- KerannasunPP36225Primula plant named ‘Kerannasun’UNDER PATENTAugust 21, 2043
- KERANNAWEAVEPP36684Primula plant named ‘KERANNAWEAVE’UNDER PATENTAugust 9, 2044
- KERBELBLUWATPP36803Primula plant named ‘KERBELBLUWAT’UNDER PATENTAugust 9, 2044
- KERBELROSAPP36833Primula plant named ‘KERBELROSA’UNDER PATENTAugust 9, 2044
Already in the public domain — 8 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.
- KerbelmilkPP17716Primula plant named ‘Kerbelmilk’PUBLIC DOMAINOctober 3, 2025
- KerbelpicePP16598Primula plant named ‘Kerbelpice’PUBLIC DOMAINMay 29, 2025
- KerbelcobPP16397Primula plant named ‘Kerbelcob’PUBLIC DOMAINMarch 27, 2025
- KerbelbutPP16373Primula plant named ‘Kerbelbut’PUBLIC DOMAINMarch 20, 2025
- KerbelnecPP16365Primula plant named ‘Kerbelnec’PUBLIC DOMAINMarch 18, 2025
- KerbelcremPP16205Primula plant named ‘Kerbelcrem’PUBLIC DOMAINJanuary 28, 2025
- PrinicPP12892Primula plant named ‘Prinic’PUBLIC DOMAINApril 6, 2021
- YvonnePP10099Plant variety of Primula named `Yvonne`PUBLIC DOMAINJune 10, 2016
Botanically this is Primula. 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.