Plant
Lilac
14 US plant patents name this plant. 7 have expired, so those cultivars are free to propagate and sell. The next of the 7 still protected comes off patent on October 1, 2028.
Still under patent — 7 cultivars
Soonest to come off patent first. You may not propagate these for sale until the date shown.
- PendaPP20575Lilac plant named ‘Penda’UNDER PATENTOctober 1, 2028
- Pink PerfumePP24252Lilac plant named ‘Pink Perfume’UNDER PATENTJuly 11, 2032
- SMSXPMPP26548Lilac plant named ‘SMSXPM’UNDER PATENTFebruary 11, 2034
- SMSJBP7PP26549Lilac plant name ‘SMSJBP7’UNDER PATENTFebruary 12, 2034
- SMNSYPRZ1PP26927Lilac plant named ‘SMNSYPRZ1’UNDER PATENTJanuary 23, 2035
- GARlisabzarPP31899Lilac plant named ‘GARlisabzar’UNDER PATENTJuly 30, 2039
- SCHolirofragPP32085Lilac plant named ‘SCHolirofrag’UNDER PATENTSeptember 18, 2039
Already in the public domain — 7 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.
- BailinaPP16662Lilac plant named ‘Bailina’PUBLIC DOMAINJuly 21, 2025
- New Patriot Variegated-LilacPP17110Lilac plant named ‘New Patriot Variegated-Lilac’PUBLIC DOMAINJune 18, 2024
- BailmingPP16349Lilac plant named ‘Bailming’PUBLIC DOMAINMay 1, 2024
- Golden EclipsePP15990Lilac plant named ‘Golden Eclipse’PUBLIC DOMAINNovember 30, 2023
- BailsugarPP15588Lilac plant named ‘Bailsugar’PUBLIC DOMAINMarch 30, 2023
- BaildustPP15152Lilac plant named ‘Baildust’PUBLIC DOMAINMay 31, 2022
- BailbellePP12294Lilac plant named ‘Bailbelle’PUBLIC DOMAINDecember 8, 2019
Botanically this is Syringa. 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.