US Plant Patent PP26799
IFG Twenty
Grapevine named ‘IFG Twenty’
UNDER PATENT
Still under patent. Protection ends June 18, 2034.
Twenty years from the filing date would end on April 25, 2034. This patent earned 54 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP26799
- Filed
- April 25, 2014
- Granted
- June 7, 2016
- Expires
- June 18, 2034
- Assignee
- CAIN DAVID, INTERNAT FRUIT GENETICS LLC
- Inventor
- CAIN DAVID
Abstract
This invention is a new and distinct grapevine variety denominated ‘IFG Twenty’. The new grapevine is characterized by producing naturally large seedless blue-black berries having a narrow ellipsoidal to cylindrical shape with a strong fruity labrusca flavor. Fruits normally ripen mid to late season about early to mid-September near Delano Calif. Fruits are fairly low in acidity, with medium dense firm texture, occasionally noticeable seed trace. Vines are productive and can be spur pruned.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
What is claimed: 1. A new and distinct variety of grapevine as herein illustrated and described.
Read the full patent: US Plant Patent PP26799 in full — the complete specification, every figure, and the file history.