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.
Zea mays L. · Maize
RAGT 2N S.A.S
Chrysanthemum L. · Chrysanthemum
WALTER H. JESSEL, JR. & WILLIAM E. DUFFETT
Solanum tuberosum L. · Potato
Temmerman Handels- en Kweekbedrijf B.V.
Zea mays L. · Maize
PIONEER SAATEN| Pioneer Hi-Bred Northern Europe Service Division GmbH
Pisum sativum L. · Pea
Nunhems Zaden BV (NL)
Chrysanthemum L. · Chrysanthemum
WILLIAM E DUFFETT
Impatiens L. · Balsam
Mikkelsen, James C.|Ashtabula, OH
Beta vulgaris Sugar Beet Group · Sugar beet
Syngenta Seeds
Beta vulgaris Sugar Beet Group · Sugar beet
KWS Saat AG, DE
Chrysanthemum L. · Chrysanthemum
WILLIAM E DUFFETT
Vicia villosa Roth · Hairy vetch
Feldsaaten Freudenberger Gmbh & Co (DE)
Daucus carota L. · Carrot
Seminis Vegetable Seeds (NL)
Lactuca sativa L. · Lettuce
Petoseed Co INC (US)
Beta vulgaris Sugar Beet Group · Sugar beet
DIECKMANN JOHANNES| Johannes Dieckmann
Cucumis sativus L. · Cucumber
Hazera Seeds B.V.
Festuca trachyphylla (Hack.) Hack. · Hard fescue
John Rutkai
Pelargonium L'Hér. ex Ait. · Geranium
Gunter DUMMEN (DE)
Cucumis sativus L. · Cucumber
Nunhems B.V.
Chrysanthemum L. · Chrysanthemum
WALTER H. JESSEL, JR. & WILLIAM E. DUFFETT
Beta vulgaris Sugar Beet Group · Sugar beet
Maribo, DK
Solanum tuberosum L. · Potato
Sloots Solanum BV (NL)
Rosa L. · Rose
SCHREURS PETRUS NICOLAAS JOHANNES
Triticum aestivum L. · Bread wheat
NICKERSON (UK)
Solanum lycopersicum L. · Tomato
HM.CLAUSE