US Plant Patent PP23531
IFG Six
Grapevine ‘IFG Six’
UNDER PATENT
Still under patent. Protection ends June 22, 2031.
No term adjustment or disclaimer is recorded against this patent, so this is the full statutory term — twenty years from the filing date.

The record
- Patent number
- PP23531
- Filed
- June 22, 2011
- Granted
- April 16, 2013
- Expires
- June 22, 2031
- Assignee
- CAIN DAVID, INTERNAT FRUIT GENETICS LLC
- Inventor
- CAIN DAVID
Abstract
This invention is a new and distinct grapevine variety denominated ‘IFG Six’. The new grapevine is characterized by producing naturally large, extremely elongated, narrow diameter, crisp, seedless black berries having a distinct dimple on the distal end. The fruit ripen and are commercially harvestable from late August to mid-September. Berries color to full black and store well.
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 PP23531 in full — the complete specification, every figure, and the file history.