US Plant Patent PP18760
Wonderful Wampee
Achillea plant named ‘Wonderful Wampee’
UNDER PATENT
Still under patent. Protection ends September 12, 2026.
Twenty years from the filing date would end on February 7, 2026. This patent earned 217 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP18760
- Filed
- February 7, 2006
- Granted
- April 29, 2008
- Expires
- September 12, 2026
- Assignee
- ZWAAN MICHIEL
- Inventor
- ZWAAN MICHIEL
Abstract
A new cultivar of Achillea millefolium, ‘Wonderful Wampee’, characterized by it long blooming habit, its vigorous growth habit, its compact growth habit and its bright clear pink flowers that fade to a light pink with consistent bloom color throughout the plant.
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 Achillea plant named ‘Wonderful Wampee’ as herein illustrated and described.
Read the full patent: US Plant Patent PP18760 in full — the complete specification, every figure, and the file history.