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.
Pisum sativum L. · Pea
Limagrain Belgium N.V.
Lactuca sativa L. · Lettuce
Rijk Zwaan (NL)
Brassica oleracea L. (Cauliflower Group) · Cauliflower
L. Daehnfeldt A/S
Cucumis sativus L. · Cucumber
ROYAL SLUIS
Zea mays L. · Maize
KWS SAAT SE & CO.KGAA
Gerbera L. · Gerbera
Schreurs, P.
Lactuca sativa L. · Lettuce
Novartis Seeds BV (NL)
Helianthus annuus L. · Sunflower
Regis Fournier
Rosa L. · Rose
Theo Adrianus Segers
Lolium perenne L. · Perennial ryegrass
RAGT SA (FR)
Helianthus annuus L. · Sunflower
PIONEER OVERSEAS CORPORATION US
Chrysanthemum L. · Chrysanthemum
Vandenberg Cornelis P.|Salinas, CA
Poa trivialis L. · Rough bluegrass
Pisum sativum L. · Pea
NOVARTIS SEEDS
Brassica oleracea L. (Kohlrabi Group) · Kohlrabi
Seminis Vegetable Seeds
Zea mays L. · Maize
Pioneer Hi-Bred
Lolium perenne L. · Perennial ryegrass
MOMMERSTEEG INTERNATIONAL| Mommersteeg International B.V.
Cucumis melo L. · Melon
DE RUITER SEEDS
Pelargonium zonale (L.) L'Hér. · Horseshoe pelargonium
Hofmann Christa
Rosa L. · Rose
PEKMEZ PAUL| Paul Pekmez
Hordeum vulgare L. · Barley
W WEIBULL
Zea mays L. subsp. mays (Maize Group) · Maize
Advanta Seeds B.V. (NL)
Daucus carota L. · Carrot
ROYAL SLUIS
Zea mays L. · Maize
PIONEER OVERSEAS CORPORATION