Breeder
DOFFERHOFF HANS
6 US plant patents, granted between 2006 and 2016.
Filed under the DOFFERHOFF name. Related entities are listed separately on the DOFFERHOFF search, because a company and a person are not the same filer even when the name matches.
Still under patent — 5 cultivars
Soonest to come off patent first. You may not propagate these for sale until the date shown.
- magic purplePP19809Gentiana plant named ‘magic purple’UNDER PATENTFebruary 12, 2028
- Blue MagicPP20704Gentiana plant named ‘Blue Magic’UNDER PATENTNovember 12, 2028
- White MagicPP21759Gentiana plant named ‘White Magic’UNDER PATENTNovember 12, 2029
- Blue StarPP27016Gentiana plant named ‘Blue Star’UNDER PATENTSeptember 25, 2034
- AmorPP27119Helleborus plant named ‘Amor’UNDER PATENTJanuary 26, 2035
Already in the public domain — 1 cultivar
Most recently freed first. Anyone may propagate and sell this plant — though the name it is sold under may still be a live trademark.
- MarshaPP16562Gentiana plant named ‘Marsha’PUBLIC DOMAINAugust 6, 2025