US Plant Patent PP19579
Marquette
Grapevine plant named ‘Marquette’
UNDER PATENT
Still under patent. Protection ends January 31, 2027.
Twenty years from the filing date would end on October 13, 2026. This patent earned 110 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP19579
- Filed
- October 13, 2006
- Granted
- December 16, 2008
- Expires
- January 31, 2027
- Assignee
- UNIV MINNESOTA
- Inventor
- HEMSTAD PETER; LUBY JAMES
Abstract
The invention is a new and distinct variety of grape vine plant designated ‘Marquette’, which produces bluish-black colored fruit suitable for red wine production, and has a combination of high wine quality, excellent cold hardiness and good disease resistance.
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 plant designated ‘Marquette’ as described and illustrated herein.
Read the full patent: US Plant Patent PP19579 in full — the complete specification, every figure, and the file history.