Genus
Poa
24 US plant patents have been granted in this genus. 20 are already in the public domain — anyone may propagate and sell them. The next of the 4 still protected comes off patent on March 23, 2029.
Still under patent — 4 cultivars
Soonest to come off patent first. You may not propagate these for sale until the date shown.
- B-5.0815PP21348Kentucky bluegrass plant named ‘B-5.0815’UNDER PATENTMarch 23, 2029
- NE-KYB-05-001PP25683Poa pratensis plant named ‘NE-KYB-05-001’UNDER PATENTJuly 17, 2029
- TAES 5701PP34353Hybrid bluegrass named ‘TAES 5701’UNDER PATENTApril 28, 2041
- DALBG 1201PP34672Hybrid bluegrass named ‘DALBG 1201’UNDER PATENTApril 28, 2041
Already in the public domain — 20 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.
- HB 328PP18934Hybrid variety of bluegrass designated ‘HB 328’PUBLIC DOMAINSeptember 10, 2026
- Ba81-227PP12435Kentucky bluegrass designated ‘Ba81-227’PUBLIC DOMAINNovember 26, 2020
- Ba75-173PP11987Kentucky bluegrass designated ‘Ba75-173’PUBLIC DOMAINMay 24, 2020
- Ba79-260PP11520Kentucky bluegrass designated `Ba79-260`PUBLIC DOMAINJuly 22, 2018
- Ba76-372PP11647Kentucky bluegrass designated `Ba76-372`PUBLIC DOMAINJuly 22, 2018
- Ba87-102PP11536Kentucky bluegrass designated `Ba87-102`PUBLIC DOMAINFebruary 27, 2018
- Ba74-17PP10925Kentucky Bluegrass, named `Ba74-17`PUBLIC DOMAINOctober 14, 2017
- Ba 72-441 Kentucky bluegrassPP6585Kentucky bluegrassPUBLIC DOMAINMay 29, 2007
- Ba 72-492PP6537Kentucky bluegrass `Ba 72-492`PUBLIC DOMAINMarch 17, 2007
- BA 70-139PP6538Kentucky bluegrass--BA 70-139PUBLIC DOMAINMarch 17, 2007
- Ba 72-500 Kentucky bluegrassPP6280Kentucky bluegrassPUBLIC DOMAINSeptember 19, 2006
- Ba 61-91 Kentucky bluegrassPP6279Kentucky bluegrassPUBLIC DOMAINJune 10, 2006
- Bluegrass plantPP4698PUBLIC DOMAINAugust 27, 1999
- A22PP4703Bluegrass plantPUBLIC DOMAINAugust 27, 1999
- BluegrassPP4704PUBLIC DOMAINAugust 27, 1999
- RugbyPP4465Kentucky bluegrass plantPUBLIC DOMAINJune 22, 1998
- Distinct variety of bluegrass plantPP4453PUBLIC DOMAINMay 15, 1998
- Ba 62-55-MPP4336Kentucky bluegrassPUBLIC DOMAINDecember 27, 1997
- Kentucky bluegrassPP4223PUBLIC DOMAINMarch 14, 1995
- WK 411 bluegrassPP4165Bluegrass plantPUBLIC DOMAINDecember 13, 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.