US Plant Patent PP20252
Sheegene-12
Grapevine ‘Sheegene-12’
UNDER PATENT
Still under patent. Protection ends October 14, 2027.
Twenty years from the filing date would end on August 30, 2027. This patent earned 45 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP20252
- Filed
- August 30, 2007
- Granted
- September 1, 2009
- Expires
- October 14, 2027
- Assignee
- SHEEHAN TIMOTHY P
- Inventor
- SHEEHAN TIMOTHY P
Abstract
The new and distinct variety characterized by a dark red-colored, medium sized seedless grape that ripens in early August approximately two weeks later than the Flame Seedless Grape (unpatented) when grown in the San Joaquin Valley of Central California. The grapes of this variety are produced on strong woody stem 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 variety of grapevine to be known as ‘Sheegene-12’, substantially as illustrated and described, characterized principally by its production of dark red-colored, medium sized seedless grapes, that mature approximately two weeks later in the season of ripening than does the Flame Seedless Grape (unpatented) which it closely resembles.
Read the full patent: US Plant Patent PP20252 in full — the complete specification, every figure, and the file history.