US Plant Patent PP18933
Raspberry Tart
Echinacea purpurea plant named ‘Raspberry Tart’
UNDER PATENT
Still under patent. Protection ends March 25, 2027.
Twenty years from the filing date would end on February 12, 2027. This patent earned 41 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP18933
- Filed
- February 12, 2007
- Granted
- June 17, 2008
- Expires
- March 25, 2027
- Assignee
- TERRA NOVA NURSERIES INC
- Inventor
- KORLIPARA HARINI
Abstract
A new and distinct cultivar of Echinacea purpurea plant named ‘Raspberry Tart’ characterized by smallish inflorescences of intense red purple with a double row of reflexed rays florets, being very floriferous, with a dwarf compact habit, strong upright stems, and good vigor.
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 Echinacea purpurea plant as herein illustrated and described.
Read the full patent: US Plant Patent PP18933 in full — the complete specification, every figure, and the file history.