Genus
Liriope
16 US plant patents have been granted in this genus. 5 are already in the public domain — anyone may propagate and sell them. The next of the 11 still protected comes off patent on March 20, 2028.
On the name: Filed as Liriope. Now generally treated as a synonym under current taxonomy.
Still under patent — 11 cultivars
Soonest to come off patent first. You may not propagate these for sale until the date shown.
- LIRJPP20116Liriope muscari plant named ‘LIRJ’UNDER PATENTMarch 20, 2028
- LIRFPP20622Liriope muscari plant named ‘LIRF’UNDER PATENTJune 10, 2028
- LIRTPPP20623Liriope muscari plant named ‘LIRTP’UNDER PATENTJune 10, 2028
- Sno ConePP20605Liriope plant named ‘Sno Cone’UNDER PATENTOctober 23, 2028
- EXC 052PP21352Liriope plant named ‘EXC 052’UNDER PATENTApril 20, 2029
- ET-LIR 2PP25181Liriope plant named ‘ET-LIR 2’UNDER PATENTMay 8, 2033
- ET-LIR 1PP25180Liriope plant named ‘ET-LIR 1’UNDER PATENTMay 13, 2033
- PontoviaPP25670Liriope gigantea plant named ‘Pontovia’UNDER PATENTDecember 6, 2033
- LIRSSPP27570Liriope muscari plant named ‘LIRSS’UNDER PATENTFebruary 20, 2035
- NongmnPP27434Liriope plant named ‘Nongmn’UNDER PATENTMarch 13, 2035
- Fan DancerPP30414Liriope plant named ‘Fan Dancer’UNDER PATENTJanuary 18, 2038
Already in the public domain — 5 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.
- MarantPP20207Liriope plant named ‘Marant’PUBLIC DOMAINMay 11, 2026
- CassidyPP16215Liriope plant named ‘Cassidy’PUBLIC DOMAINJanuary 22, 2025
- BigunPP15474Liriope muscari plant named ‘Bigun’PUBLIC DOMAINMay 14, 2024
- Love Potion No. 13PP15471Liriope muscari plant named ‘Love Potion No. 13’PUBLIC DOMAINAugust 19, 2022
- Merton JacobsPP12068Liriope gigantea plant named ‘Merton Jacobs’PUBLIC DOMAINOctober 18, 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.