US Plant Patent PP18937
Sheegene-1
Grapevine denominated ‘Sheegene-1’
UNDER PATENT
Still under patent. Protection ends November 14, 2026.
Twenty years from the filing date would end on November 6, 2026. This patent earned 8 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP18937
- Filed
- November 6, 2006
- Granted
- June 17, 2008
- Expires
- November 14, 2026
- Assignee
- SHEEHAN TIMOTHY P
- Inventor
- SHEEHAN TIMOTHY P
Abstract
A new and distinct variety of grapevine which is somewhat remotely similar to the ‘Crimson’ grapevine (not patented), but from which it is distinguished by producing fruit which are mature for harvesting and shipment approximately two (2) to three (3) weeks prior to the fruit produced by the ‘Crimson’ grapevine (not patented) and wherein the fruit are seedless berries which are juicy with an excellent flavor, red skin coloration and a moderately firm and tough skin. The berries of the new variety are borne on strong, woody stems which 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 substantially as illustrated and described which is somewhat remotely similar to the ‘Crimson’ grapevine (not patented), but from which it is distinguished by producing fruit which are mature for commercial harvesting and shipment approximately September 15 th through September 30 th , or about two (2) to three (3) weeks before the ‘Crimson’ grapevine (not patented), in the San Joaquin Valley of central California, and which produces large grapes with more overall red coloration and more flavor.
Read the full patent: US Plant Patent PP18937 in full — the complete specification, every figure, and the file history.