US Plant Patent PP18467
HB 129
Hybrid variety of Texas X kentucky bluegrass designated ‘HB 129’
PUBLIC DOMAIN
Patent expired January 7, 2026. This plant is in the public domain — anyone may propagate and sell it.
Twenty years from the filing date would end on August 5, 2025. This patent earned 155 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP18467
- Filed
- August 5, 2005
- Granted
- January 29, 2008
- Expires
- January 7, 2026
- Assignee
- OMS INVESTMENTS INC
- Inventor
- HARDISON JOHN R; BURR JAY B; FRELICH JAMES R; MARQUEZ GEORGE
Abstract
A hybrid variety of Texas bluegrass×Kentucky bluegrass as described, characterized by rapid establishment; a light green, dense turf; a wide leaf blade; aggressive rhizome growth; a reduced level of cotton on the seed; and a medium to high seed yield potential.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
1. A new and distinct hybrid variety of Texas bluegrass×Kentucky bluegrass plant, as herein illustrated and described and characterized by rapid establishment; a light green, dense turf; a wide leaf blade; aggressive rhizome growth; a reduced level of cotton on the seed; and a medium to high seed yield potential.
Read the full patent: US Plant Patent PP18467 in full — the complete specification, every figure, and the file history.