US Plant Patent PP16177
Sugratwentyfour
Grapevine named ‘Sugratwentyfour’
PUBLIC DOMAIN
Patent expired December 7, 2023. This plant is in the public domain — anyone may propagate and sell it.
Twenty years from the filing date would end on July 10, 2023. This patent earned 150 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP16177
- Filed
- July 10, 2003
- Granted
- January 3, 2006
- Expires
- December 7, 2023
- Assignee
- SUN WORLD INTERNATIONAL INC
- Inventor
- CAIN DAVID W; STRIEM MICHAEL J
Abstract
A new and distinct grapevine variety characterized by medium-sized round, green-yellowish seedless grapes with mild muscat flavor and a crisp texture. The new variety is a mid-season variety, ripening before any other muscat flavored, seedless grape cultivars grown in California. The grapes of the new variety have medium sugar content and excellent eating quality.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
1. A new and distinct variety of grapevine as herein illustrated and described.
Read the full patent: US Plant Patent PP16177 in full — the complete specification, every figure, and the file history.