Genus
Ulmus
24 US plant patents have been granted in this genus. 17 are already in the public domain — anyone may propagate and sell them. The next of the 7 still protected comes off patent on February 9, 2027.
Still under patent — 7 cultivars
Soonest to come off patent first. You may not propagate these for sale until the date shown.
- St. CroixPP20097American elm tree named ‘St. Croix’UNDER PATENTFebruary 9, 2027
- MON1PP21608Lacebark elm tree named ‘MON1’UNDER PATENTAugust 8, 2029
- MeirenyuPP23756Elm tree named ‘Meirenyu’UNDER PATENTMarch 8, 2032
- UAMTFPP30543Elm tree named ‘UAMTF’UNDER PATENTAugust 28, 2037
- DavesStraightUpPP31914Ulmus plant named ‘DavesStraightUp’UNDER PATENTJuly 18, 2039
- EveralanPP36522Ulmus plant named ‘Everalan’UNDER PATENTAugust 9, 2044
- UCMTFPP37271Ulmus tree named ‘UCMTF’UNDER PATENTMarch 19, 2045
Already in the public domain — 17 cultivars
Most recently freed first. Anyone may propagate and sell these plants — though the name it is sold under may still be a live trademark.
- BSNUPFPP17655Chinese Elm tree named ‘BSNUPF’PUBLIC DOMAINDecember 2, 2025
- Whit XXXPP16883Lacebark elm tree named ‘Whit XXX’PUBLIC DOMAINMarch 9, 2025
- UPMTFPP11295Lacebark elm tree named `UPMTF`PUBLIC DOMAINFebruary 6, 2018
- ZettlerPP10846Lacebark elm tree named `Zettler`PUBLIC DOMAINMay 23, 2017
- DiscoveryPP10558Japanese elm tree named `Discovery`PUBLIC DOMAINMarch 10, 2017
- Prince RichardPP10732Elm named `Prince Richard`PUBLIC DOMAINDecember 19, 2016
- WideleafPP8730Elm tree variety named WideleafPUBLIC DOMAINMarch 22, 2013
- New HorizonPP8684Elm tree named New HorizonPUBLIC DOMAINJune 18, 2012
- CathedralPP8683Elm tree named "Cathedral"PUBLIC DOMAINMarch 26, 2012
- Emer IPP7551Chinese elm tree named `Emer I`PUBLIC DOMAINApril 10, 2009
- Emer IIPP7552Chinese elm tree named `Emer II`PUBLIC DOMAINApril 10, 2009
- Golden Rey ElmPP7240Elm tree named Golden Rey ElmPUBLIC DOMAINMarch 3, 2009
- ARoss/Central ParkPP6983Chinese elm cultivar named "ARoss/Central Park"PUBLIC DOMAINFebruary 1, 2008
- IndependencePP6227Elm tree named IndependencePUBLIC DOMAINOctober 15, 2005
- Elm treePP5554PUBLIC DOMAINJuly 27, 2004
- RegalPP5335Elm tree called RegalPUBLIC DOMAINMarch 7, 2003
- UlmusPP5015Elm treePUBLIC DOMAINApril 29, 2001
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.