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. (Cauliflower Group) · Cauliflower
Hybrids Ellas Abee
Linum usitatissimum L. · Common flax
Cooperative Agricole Liniere (FR)
Amaryllis
Berbee Beheer B.V.
Zea mays L. subsp. mays (Maize Group) · Maize
Pioneer Hi-Bred International Inc (US)
Lilium L. · Lily
Trior Lelie B.V.
Solanum lycopersicum L. · Tomato
GOLDEN WEST SEED RESEARCH Co.
Alstroemeria L. · Alstroemeria
Duyn, Cornelius van|Rijnsburg, Netherlands
Allium cepa L. · Onion
SPAETH HANS| Erbe/Erbengemeinschaft Dr. Hans Rolf Spaeth
Cucumis sativus L. · Cucumber
HORTAG SEED CO.
Zea mays L. subsp. mays (Maize Group) · Maize
Maisadour Semences, FR
Phaseolus vulgaris L. · Common bean
Nunhems Zaden BV (NL)
Hordeum vulgare L. · Barley
INNOSEEDS
Brassica napus var. napus · Rapeseed
Monsanto Technology LLC, US
Brassica oleracea L. (White Cabbage Group) · White cabbage
PETOSEED CO
Solanum lycopersicum L. · Tomato
A.R.O. THE VOLCANI CENTER
Chrysanthemum L. · Chrysanthemum
Duffett, William E.|Salinas, CA
Beta vulgaris Sugar Beet Group · Sugar beet
Breeding Division of Hellenic Sugar Industry
Pisum sativum L. · Pea
Seminis Vegetable Seeds
Zea mays L. subsp. mays (Maize Group) · Maize
D J Van der Have BV (NL)
Allium porrum L. · Leek
Semenarna Ljubljana, SI
Agrostis capillaris L. · Common bent
Carlsson, Gösta
Gossypium hirsutum L. · Upland cotton
PETRISCO INTER. CO.
Beta vulgaris Garden Beet Group · Garden beet
Phaseolus vulgaris L. · Common bean
GOLDEN WEST SEED RESEARCH Co.