Plant
Bluegrass
8 US plant patents name this plant. 6 have expired, so those cultivars are free to propagate and sell. The next of the 2 still protected comes off patent on April 28, 2041.
Still under patent — 2 cultivars
Soonest to come off patent first. You may not propagate these for sale until the date shown.
- 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 — 6 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
- Bluegrass plantPP4698PUBLIC DOMAINAugust 27, 1999
- A22PP4703Bluegrass plantPUBLIC DOMAINAugust 27, 1999
- BluegrassPP4704PUBLIC DOMAINAugust 27, 1999
- Distinct variety of bluegrass plantPP4453PUBLIC DOMAINMay 15, 1998
- WK 411 bluegrassPP4165Bluegrass plantPUBLIC DOMAINDecember 13, 1994
Botanically this is Poa. A patent expiring frees the plant, and its cultivar name with it — cultivar names cannot be trademarked. Any brand name it is sold under is a separate thing and may still be owned.