US Plant Patent PP28294
COSEH 4000
Helleborus plant named ‘COSEH 4000’
UNDER PATENT
Still under patent. Protection ends April 11, 2036.
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
- PP28294
- Filed
- April 11, 2016
- Granted
- August 15, 2017
- Expires
- April 11, 2036
- Assignee
- HEUGER JOSEF
- Inventor
- HEUGER JOSEF
Abstract
A new and distinct cultivar of Helleborus plant named ‘COSEH 4000’, characterized by its upright and mounding plant habit; uniform and freely flowering habit; dark green-colored leaves; freely and early flowering habit; single white-colored flowers with red purple-colored margins; and good garden performance.
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 Helleborus plant named ‘COSEH 4000’ as illustrated and described.
Read the full patent: US Plant Patent PP28294 in full — the complete specification, every figure, and the file history.