Genus
Acer
68 US plant patents have been granted in this genus. 37 are already in the public domain — anyone may propagate and sell them. The next of the 31 still protected comes off patent on September 16, 2026.
Still under patent — 31 cultivars
Soonest to come off patent first. You may not propagate these for sale until the date shown.
- Garnet TowerPP18561Acer palmatum plant named ‘Garnet Tower’UNDER PATENTSeptember 16, 2026
- RyusenPP18501Acer palmatum plant named ‘Ryusen’UNDER PATENTSeptember 26, 2026
- SandersvillePP19807Sugar maple tree named ‘Sandersville’UNDER PATENTFebruary 6, 2028
- Katie ColePP21076Red maple tree named ‘Katie Cole’UNDER PATENTSeptember 19, 2028
- JFS-KW202PP21838Maple tree named ‘JFS-KW202’UNDER PATENTAugust 9, 2029
- JN4PP22249Japanese maple tree named ‘JN4’UNDER PATENTOctober 20, 2029
- JFS-KW8PP22034Sugar maple tree named ‘JFS-KW8’UNDER PATENTApril 2, 2030
- JFS-Caddo2PP23361Sugar maple tree named ‘JFS-Caddo2’UNDER PATENTApril 7, 2031
- WHIT XLVPP23957Sugar maple tree named ‘WHIT XLV’UNDER PATENTSeptember 20, 2031
- JSC KingstwoPP25302Acer rubrum named ‘JSC Kingstwo’UNDER PATENTSeptember 11, 2032
- JFS-KW78PP25301Red maple tree named ‘JFS-KW78’UNDER PATENTSeptember 5, 2033
- MillerPP28139Red maple tree named ‘Miller’UNDER PATENTAugust 12, 2034
- JefUMPP27278Acer ginnala tree named ‘JefUM’UNDER PATENTNovember 30, 2034
- JFS-NuMex 3PP27930Bigtooth maple tree named ‘JFS-NuMex 3’UNDER PATENTMarch 24, 2035
- JFS-KW187PP27545Maple tree named ‘JFS-KW187’UNDER PATENTAugust 11, 2035
- JFS-KW249PP27985Maple tree named ‘JFS-KW249’UNDER PATENTDecember 16, 2035
- Chacer01PP29301Acer palmatum tree named ‘Chacer01’UNDER PATENTJune 30, 2036
- JWW8PP30090Acer plant named ‘JWW8’UNDER PATENTJuly 12, 2037
- JWW7PP30091Acer tree named ‘JWW7’UNDER PATENTJuly 12, 2037
- MONFRICKPP31864Acer palmatum tree named ‘MONFRICK’UNDER PATENTFebruary 19, 2039
- ARJOS1PP32420Acer palmatum tree named ‘ARJOS1’UNDER PATENTMay 21, 2039
- RustyAllenPP32033Maple tree named ‘RustyAllen’UNDER PATENTJuly 1, 2039
- VolcanoPP32542Acer tree named ‘Volcano’UNDER PATENTApril 1, 2040
- SONKOOT6PP33918Acer plant named ‘SONKOOT6’UNDER PATENTJune 17, 2041
- SONKOOT9PP33919Acer plant named ‘SONKOOT9’UNDER PATENTJune 17, 2041
- GallatinPP34294Sugar maple tree named ‘Gallatin’UNDER PATENTJune 28, 2041
- RVF-1PP35031Red maple tree named ‘RVF-1’UNDER PATENTApril 20, 2042
- INAG-E61PP35081Maple tree named ‘INAG-E61’UNDER PATENTOctober 3, 2042
- WW WarrenPP36538Red maple tree named ‘WW Warren’UNDER PATENTMay 14, 2044
- Autken1PP36842Acer tree named ‘Autken1’UNDER PATENTJune 9, 2044
- INWQ-E92PP36977Japanese maple tree named ‘INWQ-E92’UNDER PATENTSeptember 24, 2044
Already in the public domain — 37 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.
- Gwen's Rose DelightPP18728Japanese maple plant named ‘Gwen's Rose Delight’PUBLIC DOMAINJune 30, 2026
- ABFSSPP19181Trident maple tree named ‘ABFSS’PUBLIC DOMAINJune 29, 2026
- TunpettiPP17537Sycamore maple tree named ‘Tunpetti’PUBLIC DOMAINAugust 4, 2025
- Frank JrPP16769Red Maple tree named ‘Frank Jr.’PUBLIC DOMAINJune 14, 2025
- RT4PP16652Red Maple tree named ‘RT4’PUBLIC DOMAINDecember 26, 2024
- BAKrisePP16574Sugar maple tree named ‘BAKrise’PUBLIC DOMAINNovember 18, 2024
- MUNN 001PP16718Acer shirasawanum plant named ‘MUNN 001’PUBLIC DOMAINOctober 14, 2024
- ABMTFPP16629Trident maple tree named ‘ABMTF’PUBLIC DOMAINAugust 31, 2024
- TaylorPP15943Japanese Maple plant named ‘Taylor’PUBLIC DOMAINAugust 17, 2024
- BAKharlPP16733Sugar maple tree named ‘BAKharl’PUBLIC DOMAINJune 28, 2024
- GarAnnPP15023Tatarian maple tree named ‘GarAnn’PUBLIC DOMAINAugust 24, 2023
- Fujinami NishikiPP15910Acer palmatum plant named ‘Fujinami Nishiki’PUBLIC DOMAINJanuary 31, 2023
- AF#1PP15593Freeman maple tree named ‘AF#1’PUBLIC DOMAINJanuary 24, 2023
- Hawkersmith 1PP16815Sugar maple named ‘Hawkersmith 1’PUBLIC DOMAINAugust 29, 2022
- BailstaPP11119Sugar maple tree named `Bailsta`PUBLIC DOMAINFebruary 3, 2018
- Barrett ColePP10590Sugar maple `Barrett Cole`PUBLIC DOMAINJanuary 10, 2017
- Beni Shi EnPP9697Acer palmatum named `Beni Shi En`PUBLIC DOMAINJanuary 16, 2016
- AbtirPP9576Trident maple tree named `Abtir`PUBLIC DOMAINApril 3, 2015
- Autumn SpirePP7803Red maple tree named Autumn SpirePUBLIC DOMAINMay 22, 2010
- WarrenredPP7433Maple tree named `Warrenred`PUBLIC DOMAINJanuary 5, 2010
- KeithsformPP7529Maple tree named `Keithsform`PUBLIC DOMAINJanuary 5, 2010
- Crimson PrincePP7217Acer palmatum "Crimson Prince"PUBLIC DOMAINJune 13, 2008
- LandsburgPP6977Red Maple -- Landsburg cultivarPUBLIC DOMAINApril 18, 2008
- Red maple named WandellPP6993PUBLIC DOMAINFebruary 19, 2008
- CelzamPP7279Seedless hybrid maple tree named CelzamPUBLIC DOMAINJuly 24, 2007
- MareltoiPP6594Maple tree named MareltoiPUBLIC DOMAINJanuary 12, 2007
- VasePP5148Red maple tree named VasePUBLIC DOMAINAugust 26, 2002
- Flax Mill MajestyPP5273Sugar maple named Flax Mill MajestyPUBLIC DOMAINMarch 8, 2002
- CommemorationPP5079Sugar maple tree named CommemorationPUBLIC DOMAINNovember 5, 2001
- NorthwoodPP5053Red maple treePUBLIC DOMAINJune 22, 2001
- LegacyPP4979Sugar maple tree named LegacyPUBLIC DOMAINMarch 18, 2001
- DeborahPP4944Maple called DeborahPUBLIC DOMAINSeptember 17, 2000
- Red maplePP4864PUBLIC DOMAINJuly 23, 2000
- PondPP4837Norway Maple--Pond CultivarPUBLIC DOMAINFebruary 22, 2000
- Sugar maplePP4534PUBLIC DOMAINAugust 21, 1998
- Sugar maplePP4654PUBLIC DOMAINAugust 21, 1998
- Maple treePP4392PUBLIC DOMAINDecember 20, 1997
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.