US Plant Patent PP28667
IFG Twenty-three
Grapevine named ‘IFG Twenty-three’
UNDER PATENT
Still under patent. Protection ends March 18, 2036.
Twenty years from the filing date would end on March 7, 2036. This patent earned 11 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP28667
- Filed
- March 7, 2016
- Granted
- November 21, 2017
- Expires
- March 18, 2036
- Assignee
- CAIN DAVID, INT FRUIT GENETICS LLC
- Inventor
- CAIN DAVID
Abstract
This invention is a new and distinct grapevine variety denominated ‘IFG Twenty-three’. The new grapevine is characterized by producing naturally large seedless reddish black berries having a spherical shape with a mild fruity labrusca flavor somewhat similar to the Kyoho variety but smaller in size and seedless.
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 PP28667 in full — the complete specification, every figure, and the file history.