US Plant Patent PP35142
Toncka 380
Heuchera plant named ‘Toncka 380’
UNDER PATENT
Still under patent. Protection ends October 7, 2042.
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
- PP35142
- Filed
- October 7, 2022
- Granted
- April 25, 2023
- Expires
- October 7, 2042
- Inventor
- HOLTMAAT HENRICUS MARIA JOSEPH
Abstract
A new cultivar of Heuchera plant named ‘Toncka 380’ that is characterized by its large leaves with a glossy surface, its leaves that are brown when young and mature to grey-green with grey-purple to black veins, its flowers that are white and red-purple in color, and its low number of inflorescences.
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 ‘Toncka 380’ as herein illustrated and described.
Read the full patent: US Plant Patent PP35142 in full — the complete specification, every figure, and the file history.