US Plant Patent PP28079
ROYAL ZEST FOUR
Peach tree named ‘ROYAL ZEST FOUR’
UNDER PATENT
Still under patent. Protection ends April 4, 2035.
Twenty years from the filing date would end on January 13, 2035. This patent earned 81 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP28079
- Filed
- January 13, 2015
- Granted
- June 6, 2017
- Expires
- April 4, 2035
- Assignee
- TEXAS A & M UNIV SYS
- Inventor
- BYRNE DAVID H; ANDERSON NATALIE
Abstract
Disclosed is a new variety of Prunus persica named ‘ROYAL ZEST FOUR’. This new variety, which requires approximately 550 chilling units of dormancy, is considered to be a peach tree of mid season maturity, which produces yellow fleshed fruit that are firm, attractively colored, and suitable for both local and regional markets.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
We claim: 1. A new and distinct Prunus persica tree, substantially as illustrated and described herein.
Read the full patent: US Plant Patent PP28079 in full — the complete specification, every figure, and the file history.