US Plant Patent PP28060
El Madrigal
Diervilla plant named ‘El Madrigal’
UNDER PATENT
Still under patent. Protection ends December 7, 2035.
Twenty years from the filing date would end on November 24, 2035. This patent earned 13 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP28060
- Filed
- November 24, 2015
- Granted
- May 30, 2017
- Expires
- December 7, 2035
- Inventor
- HALTERMANN THIEMO
Abstract
A new cultivar of Diervilla×splendens , ‘El Madrigal’, characterized by its greenish brown foliage, its floriferous habit, and its yellow flowers.
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 Diervilla plant named ‘El Madrigal’ as herein illustrated and described.
Read the full patent: US Plant Patent PP28060 in full — the complete specification, every figure, and the file history.