Plant
Cornus hybrid
2 US plant patents name this plant. 1 has expired, so that cultivar is free to propagate and sell. The next of the 1 still protected comes off patent on February 22, 2034.
Still under patent — 1 cultivar
Soonest to come off patent first. You may not propagate these for sale until the date shown.
- KN144-2PP26211Interspecific cornus hybrid tree designated ‘KN144-2’UNDER PATENTFebruary 22, 2034
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.
- KN4-43PP16293Interspecific cornus hybrid designated KN4-43PUBLIC DOMAINDecember 19, 2023
A patent expiring frees the plant, and its cultivar name with it — cultivar names cannot be trademarked. Any brand name it is sold under is a separate thing and may still be owned.