Plant
Rosemary
3 US plant patents name this plant. 3 have expired, so those cultivars are free to propagate and sell.
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.
- Athens Blue SpiresPP11552Rosemary plant named `Athens Blue Spires`PUBLIC DOMAINJune 26, 2018
- Silver SpiresPP10308Rosemary plant named `Silver Spires`PUBLIC DOMAINJuly 2, 2016
- RenzelsPP9124Rosemary plant named `Renzels`PUBLIC DOMAINApril 13, 2014
Botanically this is Rosmarinus. 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.