Plant
Aconitum
4 US plant patents name this plant. 3 have expired, so those cultivars are free to propagate and sell. The next of the 1 still protected comes off patent on January 16, 2027.
Still under patent — 1 cultivar
Soonest to come off patent first. You may not propagate these for sale until the date shown.
- Blue LagoonPP19136Aconitum plant named ‘Blue Lagoon’UNDER PATENTJanuary 16, 2027
Already in the public domain — 3 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.
- CloudyPP17800Aconitum plant named ‘Cloudy’PUBLIC DOMAINDecember 30, 2025
- Royal FlushPP16102Aconitum plant named ‘Royal Flush’PUBLIC DOMAINOctober 12, 2024
- Pink SensationPP12661Aconitum plant named ‘Pink Sensation’PUBLIC DOMAINAugust 22, 2020
Botanically this is Aconitum. 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.