US Plant Patent PP37172
USDA-ARS-Bertha Mae
Muscadine grape plant named ‘USDA-ARS-Bertha Mae’
UNDER PATENT
Still under patent. Protection ends April 4, 2045.
No term adjustment or disclaimer is recorded against this patent, so this is the full statutory term — twenty years from the filing date.
The record
- Patent number
- PP37172
- Filed
- April 4, 2025
- Granted
- December 23, 2025
- Expires
- April 4, 2045
- Assignee
- US AGRICULTURE
- Inventor
- STRINGER STEPHEN J
Abstract
A new and distinct muscadine grape plant, substantially as herein illustrated and described, characterized by mid-late season ripening berries, typically beginning in mid-August in Mississippi and Texas. ‘USDA-ARS-Bertha Mae’ has pistillate flowers and requires self-fertile pollinator cultivars to be grown nearby to achieve adequate pollination and fruit set. ‘USDA-ARS-Bertha Mae’ produces very large (˜14 g) berries having sweet and plum-like flavor, a relatively thin skin, and crisp pulp. Berries separate with high percentage of dry stem scars and are highly resistant to rain-induced physiological splitting.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
I claim: 1 . A new and distinct variety of muscadine grape plant named ‘USDA-ARS-Bertha Mae’ substantially as illustrated and described herein.
Read the full patent: US Plant Patent PP37172 in full — the complete specification, every figure, and the file history.