Plant
Lamium
8 US plant patents name this plant. 4 have expired, so those cultivars are free to propagate and sell. The next of the 4 still protected comes off patent on November 25, 2028.
Still under patent — 4 cultivars
Soonest to come off patent first. You may not propagate these for sale until the date shown.
- Lemon FrostPP20723Lamium maculatum plant named ‘Lemon Frost’UNDER PATENTNovember 25, 2028
- NonnogardkPP33342Lamium plant named ‘Nonnogardk’UNDER PATENTSeptember 26, 2040
- Orchid Frost GrandePP33573Lamium plant named ‘Orchid Frost Grande’UNDER PATENTFebruary 25, 2041
- Orchid Frost GoldPP33574Lamium plant named ‘Orchid Frost Gold’UNDER PATENTFebruary 25, 2041
Already in the public domain — 4 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.
- CheckinPP17925Lamium plant named ‘Checkin’PUBLIC DOMAINFebruary 7, 2026
- Purple DragonPP15890Lamium maculatum ‘Purple Dragon’PUBLIC DOMAINMay 15, 2022
- DellamPP11783Lamium plant named ‘Dellam’PUBLIC DOMAINJune 9, 2019
- Orchid FrostPP11122Lamium plant named `Orchid Frost`PUBLIC DOMAINMarch 11, 2018
Botanically this is Lamium. 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.