Genus
Juglans
45 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 8 still protected comes off patent on August 28, 2027.
Still under patent — 8 cultivars
Soonest to come off patent first. You may not propagate these for sale until the date shown.
- RX1PP20649Walnut rootstock ‘RX1’UNDER PATENTAugust 28, 2027
- VX211PP21179Walnut rootstock ‘VX211’UNDER PATENTJanuary 25, 2028
- IvanhoePP21718Walnut tree named ‘Ivanhoe’UNDER PATENTDecember 8, 2029
- SolanoPP25466Walnut tree named ‘Solano’UNDER PATENTMay 28, 2033
- DurhamPP28529Walnut tree named ‘Durham’UNDER PATENTMay 7, 2036
- Cliff ClonePP31862Juglans rootstock named ‘Cliff Clone’UNDER PATENTOctober 16, 2038
- wolfskillPP33383Walnut tree names 'wolfskill'UNDER PATENTNovember 12, 2040
- HickmanPP36382Walnut tree named ‘Hickman’UNDER PATENTJanuary 18, 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.
- GilletPP17135Walnut tree named ‘Gillet’PUBLIC DOMAINJanuary 12, 2025
- FordePP16495Walnut tree named ‘Forde’PUBLIC DOMAINOctober 24, 2024
- Beineke 11PP17507Black walnut tree named ‘Beineke 11’PUBLIC DOMAINOctober 24, 2024
- SextonPP16496Walnut tree named ‘Sexton’PUBLIC DOMAINOctober 8, 2024
- Beineke 13PP17124Black walnut tree named ‘Beineke 13’PUBLIC DOMAINAugust 3, 2024
- Beineke 12PP17125Black walnut tree named “Beineke 12”PUBLIC DOMAINJuly 23, 2024
- Beineke 14PP17358Black walnut tree named ‘Beineke 14’PUBLIC DOMAINJuly 9, 2024
- Beineke 9PP15728Black walnut tree named ‘Beineke 9’PUBLIC DOMAINFebruary 1, 2023
- FredrickPP14236Walnut tree named ‘Fredrick’PUBLIC DOMAINNovember 6, 2022
- Beineke 8PP15792Black walnut tree named ‘Beineke 8’PUBLIC DOMAINOctober 5, 2022
- Beineke 1PP15079Black walnut tree named ‘Beineke 1’PUBLIC DOMAINSeptember 27, 2022
- Beineke 6PP14978Black walnut tree named ‘Beineke 6’PUBLIC DOMAINAugust 10, 2022
- Beineke 10PP14839Black walnut tree named ‘Beineke 10’PUBLIC DOMAINJuly 5, 2022
- Beineke 5PP14829Black walnut tree named ‘Beineke 5’PUBLIC DOMAINJune 27, 2022
- Beineke 7PP15238Black walnut tree named ‘Beineke 7’PUBLIC DOMAINJune 24, 2022
- Beineke 4PP14777Black walnut tree named ‘Beineke 4’PUBLIC DOMAINMay 14, 2022
- Beineke 2PP15283Black walnut tree named ‘Beineke 2’PUBLIC DOMAINMay 8, 2022
- Beineke 3PP15284Black walnut tree named ‘Beineke 3’PUBLIC DOMAINMay 8, 2022
- DomotoPP12898Walnut tree named ‘Domoto’PUBLIC DOMAINNovember 17, 2019
- HPC-148PP9906Black walnut tree named HPC-148PUBLIC DOMAINMarch 18, 2016
- STW-13PP9924Black walnut tree names STW-13PUBLIC DOMAINMarch 18, 2016
- HPC-120PP9925Black walnut tree named HPC-120PUBLIC DOMAINMarch 18, 2016
- VesterPP6973Walnut tree named VesterPUBLIC DOMAINSeptember 14, 2008
- Butternut tree--Loumis cultivarPP5116PUBLIC DOMAINFebruary 2, 2002
- Distinct variety of black walnut treePP4954PUBLIC DOMAINApril 16, 2001
- Distinct variety of black walnut treePP4955PUBLIC DOMAINApril 16, 2001
- Black walnut treePP4964PUBLIC DOMAINApril 16, 2001
- Black walnut treePP4966PUBLIC DOMAINApril 16, 2001
- Black walnut treePP4968PUBLIC DOMAINApril 16, 2001
- Black walnut treePP4971PUBLIC DOMAINApril 16, 2001
- Distinct variety of black walnut treePP4542PUBLIC DOMAINSeptember 5, 1998
- Distinct variety of black walnut treePP4543PUBLIC DOMAINSeptember 5, 1998
- Distinct variety of black walnut treePP4614PUBLIC DOMAINSeptember 5, 1998
- ChandlerPP4388Walnut treePUBLIC DOMAINApril 21, 1998
- SunlandPP4389Walnut treePUBLIC DOMAINApril 21, 1998
- HowardPP4405Walnut treePUBLIC DOMAINApril 21, 1998
- Walnut treePP4132PUBLIC DOMAINOctober 25, 1994
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.