US Plant Patent PP19974
Emerald Dwarf
Hybrid Bermudagrass plant named ‘Emerald Dwarf’
UNDER PATENT
Still under patent. Protection ends July 22, 2027.
Twenty years from the filing date would end on April 27, 2027. This patent earned 86 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP19974
- Filed
- April 27, 2007
- Granted
- May 5, 2009
- Expires
- July 22, 2027
- Assignee
- COASTAL TURF INC
- Inventor
- BROWN RICHARD MORRIS; BROWN MICHAEL ANDREW; BROWN SCOTT DEREK
Abstract
A hybrid Bermudagrass cultivar, named ‘Emerald Dwarf,’ is distinguished by greater rhizome development and rooting depth in conjunction with low surface stolon development. The cultivar is especially suited to golf greens.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
1. A new and distinct Bermudagrass plant, substantially as herein shown and described, distinguished by greater rhizome development and rooting depth in conjunction with low surface stolon development, yet having shoot density sufficient to enable it to withstand mowing at very low putting green heights.
Read the full patent: US Plant Patent PP19974 in full — the complete specification, every figure, and the file history.