Genus
Carpinus
6 US plant patents have been granted in this genus. 1 is already in the public domain — anyone may propagate and sell it. The next of the 5 still protected comes off patent on February 4, 2031.
Still under patent — 5 cultivars
Soonest to come off patent first. You may not propagate these for sale until the date shown.
- JFS-KW1CBPP22814European hornbeam tree named ‘JFS-KW1CB’UNDER PATENTFebruary 4, 2031
- JN Select APP29969Carpinus plant named ‘JN Select A’UNDER PATENTJanuary 10, 2037
- JN Select AAPP32758Carpinus plant named ‘JN Select AA’UNDER PATENTAugust 19, 2039
- CCMTF1PP32815Carpinus tree named ‘CCMTF1’UNDER PATENTDecember 13, 2039
- CCMTF2PP32826Carpinus tree named ‘CCMTF2’UNDER PATENTDecember 13, 2039
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.
- Kuro BijinPP14838Carpinus coreana plant named ‘Kuro Bijin’PUBLIC DOMAINMarch 26, 2022
A patent expiring frees the plant, and its cultivar name comes with it — cultivar names cannot be trademarked, so they are always free to use. What it does not free is any brand name the plant is marketed under. Those are trademarks and renew indefinitely.