US Plant Patent PP34177
Rex Black
Heuchera plant named ‘Rex Black’
UNDER PATENT
Still under patent. Protection ends September 7, 2041.
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
- PP34177
- Filed
- September 7, 2021
- Granted
- April 26, 2022
- Expires
- September 7, 2041
- Inventor
- HOLTMAAT HENRICUS MARIA JOSEPH
Abstract
A new cultivar of Heuchera plant named ‘Rex Black’ that is characterized by its conspicuous large leaves, its foliage that is blackish in color, its strong and sturdy plant habit, and its flowers that are light lilac-pink in color.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
It is claimed: 1. A new and distinct cultivar of Heuchera plant named ‘Rex Black’ as herein illustrated and described.
Read the full patent: US Plant Patent PP34177 in full — the complete specification, every figure, and the file history.