US Plant Patent PP25404
Imperial Sun
Coreopsis plant named ‘Imperial Sun’
UNDER PATENT
Still under patent. Protection ends September 4, 2033.
Twenty years from the filing date would end on March 8, 2033. This patent earned 180 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP25404
- Filed
- March 8, 2013
- Granted
- March 31, 2015
- Expires
- September 4, 2033
- Assignee
- TERRA NOVA NURSERIES INC
- Inventor
- KORLIPARA HARINI
Abstract
A new and distinct Coreopsis plant named ‘Imperial Sun’ characterized by daisy-type inflorescences that grow to 4.5 cm in diameter, inflorescences that are bright yellow, plants hardy to Zone 6, maybe lower, grass green foliage on short stems, flowering for the whole summer, a low, mounding habit, and excellent vigor.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
I claim: 1. A new and distinct Coreopsis plant as herein illustrated and described.
Read the full patent: US Plant Patent PP25404 in full — the complete specification, every figure, and the file history.