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.
Lactuca sativa L. · Lettuce
Enza Zaden Beheer B.V.
Dactylis glomerata L. · Cocksfoot
SIMON| Prof. Dr. Uwe Simon Lehrstuhl fuer Gruenlandlehre der TU Muenchen
Lupinus albus L. · White lupin
Poznanska Hodowla Roslin Sp. z o.o
Chrysanthemum L. · Chrysanthemum
Knaap, Jacques C. M. Van der|De Lier, Netherlands
Triticum aestivum L. · Bread wheat
Saatzucht Donau GmbH & Co.KG
Lactuca sativa L. · Lettuce
ROYAL SLUIS
Brassica rapa L. subsp. pekinensis (Lour.) Hanelt · Napa cabbage
Hazera Seeds B.V.
Festuca rubra L. · Red fescue
KWS| KWS SAAT AG
Triticum aestivum L. · Bread wheat
Florimond Desprez Veuve et Fils, FR
Pelargonium L'Hér. ex Ait. · Geranium
Blair L. WINNER (US)
Beta vulgaris Sugar Beet Group · Sugar beet
KWS| KWS SAAT AG
Brassica napus var. napus · Rapeseed
Werner Horn
Solanum tuberosum L. · Potato
VESA Velhartice
Helianthus annuus L. · Sunflower
GOLDEN WEST SEED RESEARCH Co.
Solanum lycopersicum L. · Tomato
S&G SEEDS B.V.
Triticum aestivum L. · Bread wheat
MONSANTO TECHNOLOGY
Pisum sativum L. · Pea
Wilbur-Ellis Company
Pisum sativum L. · Pea
SYNGENTA SEEDS B.V.
Hordeum vulgare L. · Barley
Nilsson, Bengt
Oryza sativa L. · Rice
Sardo Piemontese Sementi Soc. Coop. Società Agricola
Cannabis sativa L. · Hemp
Lolium perenne L. · Perennial ryegrass
Agri-food and Biosciences Institute (AFBI Belfast)
Lolium perenne L. · Perennial ryegrass
TWYFORD SEEDS LTD
Pelargonium L'Hér. ex Ait. · Geranium
Ingeborg SCHUMANN (DE)