US Plant Patent PP24459
Purple Emperor
Echinacea plant named ‘Purple Emperor’
UNDER PATENT
Still under patent. Protection ends November 29, 2032.
Twenty years from the filing date would end on September 7, 2032. This patent earned 83 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP24459
- Filed
- September 7, 2012
- Granted
- May 13, 2014
- Expires
- November 29, 2032
- Assignee
- AB KWEKERSRECHTEN B V, BLOM ARIE
- Inventor
- BLOM ARIE
Abstract
A new cultivar of hybrid Echinacea , ‘Purple Emperor’, characterized by its composite flowers with ray florets that are strong purple-pink in color, held nearly horizontal when opening and slightly twisted, its medium plant height, its very strong stems, and its vigorous growth habit.
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 Echinacea plant named ‘Purple Emperor’ substantially as herein illustrated and described.
Read the full patent: US Plant Patent PP24459 in full — the complete specification, every figure, and the file history.