Public domain
Plant breeders' rights are granted for a limited term. Upon expiration, the variety enters the public domain: its seeds can be propagated and sold without the rights holder's license.
Recent years are the most sought-after: the variety is free to use but still in production.
Brassica oleracea L. (White Cabbage Group) · White cabbage
Triticum aestivum L. · Bread wheat
Capsicum annuum L. · Bell pepper
Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon
Zea mays L. · Maize
Solanum tuberosum L. · Potato
Capsicum annuum L. · Bell pepper
Capsicum annuum L. · Bell pepper
Brassica oleracea L. (Savoy Cabbage Group) · Savoy cabbage
Cucumis sativus L. · Cucumber
Brassica oleracea L. (White Cabbage Group) · White cabbage
Brassica oleracea L. (White Cabbage Group) · White cabbage
Pisum sativum L. · Pea
Zea mays L. subsp. mays (Sweet Corn Group) · Sweet corn
Beta vulgaris Sugar Beet Group · Sugar beet
Brassica oleracea L. (Cauliflower Group) · Cauliflower
Brassica oleracea L. (Cauliflower Group) · Cauliflower
Zea mays L. · Maize
Solanum tuberosum L. · Potato
Zea mays L. · Maize
Helianthus annuus L. · Sunflower
Allium cepa L. var. cepa · Onion
Festuca pratensis Huds. · Meadow fescue
Poa pratensis L. · Kentucky bluegrass