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
Cucumis sativus L. · Cucumber
Lactuca sativa L. · Lettuce
Phaseolus vulgaris L. · Common bean
Brassica napus L. · Rapeseed
Capsicum annuum L. · Bell pepper
Cucumis sativus L. · Cucumber
Phaseolus vulgaris L. · Common bean
Brassica napus var. napus · Rapeseed
Zea mays L. · Maize
Brassica oleracea L. (Broccoli Group) · Broccoli
Zea mays L. · Maize
Beta vulgaris Sugar Beet Group · Sugar beet
Allium cepa L. var. cepa · Onion
Zea mays L. · Maize
Zea mays L. subsp. mays (Sweet Corn Group) · Sweet corn
Capsicum annuum L. · Bell pepper
Lolium multiflorum Lam. · Italian ryegrass
Phaseolus vulgaris L. · Common bean
Cucumis sativus L. · Cucumber
Apium graveolens L. var. rapaceum (Mill.) Gaud. · Celeriac
Allium sativum L. · Garlic
Capsicum annuum L. · Bell pepper
Ribes uva-crispa L. · Gooseberry