US Plant Patent PP19655
Betty Tam
Wisteria plant named ‘Betty Tam’
UNDER PATENT
Still under patent. Protection ends August 22, 2027.
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
- PP19655
- Filed
- August 22, 2007
- Granted
- January 20, 2009
- Expires
- August 22, 2027
- Assignee
- GREENLEAF NURSERY COMPANY
- Inventor
- TAM PATRICK
Abstract
A new cultivar of Wisteria floribunda named ‘Betty Tam’, characterized by its repeat blooming habit, its large panicles of blue-violet flowers, its cold hardiness to U.S.D.A. Zone 5 and its vigorous growth rate and ease of propagation.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
1. A new and distinct cultivar of Wisteria plant named ‘Betty Tam’ as herein illustrated and described.
Read the full patent: US Plant Patent PP19655 in full — the complete specification, every figure, and the file history.