US Plant Patent PP26527
Sunpreme
Grapevine denominated ‘Sunpreme’
UNDER PATENT
Still under patent. Protection ends May 22, 2034.
Twenty years from the filing date would end on November 12, 2033. This patent earned 191 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP26527
- Filed
- November 12, 2013
- Granted
- March 22, 2016
- Expires
- May 22, 2034
- Assignee
- US AGRICULTURE
- Inventor
- RAMMING DAVID W; TARAILO RONALD E
Abstract
The present invention relates to a new and distinct variety of grapevine, Vitis vinifera L., which will be denominated varietally as the ‘Sunpreme’ grapevine. The new and distinct ‘Sunpreme’ grapevine variety is characterized by the production of medium-sized green-colored seedless berries that begin to wilt naturally during mid-July in the San Joaquin Valley of Central California. The noted berry wilting is the first step in raisining, after which berries begin to brown naturally on the vine. The dried grapes (raisins) of this new variety are produced on strong woody canes that do not need to be cut from the mother vine to facilitate berry drying.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
We claim: 1. A new and distinct variety of grapevine substantially as illustrated and described, characterized by its ability to dry berries naturally without the aid of cane cutting, and thereby produce high quality raisins on vines that can also be spur pruned.
Read the full patent: US Plant Patent PP26527 in full — the complete specification, every figure, and the file history.