US Plant Patent PP19065
Sugrathirtyone
Grapevine plant named ‘Sugrathirtyone’
UNDER PATENT
Still under patent. Protection ends November 24, 2026.
Twenty years from the filing date would end on January 10, 2026. This patent earned 318 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP19065
- Filed
- January 10, 2006
- Granted
- August 5, 2008
- Expires
- November 24, 2026
- Assignee
- SUN WORLD INT LLC
- Inventor
- CAIN DAVID W; STRIEM MICHAEL J
Abstract
A new and distinct grapevine variety characterized by possessing elliptic shaped, medium sized green-yellowish seedless grapes having a crisp flesh texture. The grapes have a mild neutral flavor, medium sugar content, and excellent eating quality. The new variety possesses exceptional late-ripening characteristics. Additionally, the bunches have the ability to stay on the vine for a month or more, while maintaining commercial harvest 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 PP19065 in full — the complete specification, every figure, and the file history.