US Plant Patent PP21316
Sheegene-3
Grapevine plant named ‘Sheegene-3’
UNDER PATENT
Still under patent. Protection ends May 27, 2028.
Twenty years from the filing date would end on November 8, 2026. This patent earned 566 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP21316
- Filed
- November 8, 2006
- Granted
- September 28, 2010
- Expires
- May 27, 2028
- Assignee
- SHEEHAN TIMOTHY P
- Inventor
- SHEEHAN TIMOTHY P
Abstract
The new and distinct variety characterized by a very large red seedless grape that ripens in early August three weeks later than the ‘Flame Seedless’ Grape (unpatented) with good favor, juicy and firm skin. The berries are born on strong woody stems and branches and are well adapted to commercial handling.
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 PP21316 in full — the complete specification, every figure, and the file history.