US Plant Patent PP28005
Starlight
Coreopsis plant named ‘Starlight’
UNDER PATENT
Still under patent. Protection ends June 21, 2035.
Twenty years from the filing date would end on March 19, 2035. This patent earned 94 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP28005
- Filed
- March 19, 2015
- Granted
- May 9, 2017
- Expires
- June 21, 2035
- Assignee
- PROBST DARRELL R
- Inventor
- PROBST DARRELL R
Abstract
A new cultivar of hybrid Coreopsis named ‘Starlight’ that is characterized by its compact plant habit, its nearly sterile florets result in a floriferous and long bloom season that does not require deadheading with bloom commencing in mid-June and lasting until hard frost in Connecticut, its large star-shaped inflorescences with ray florets that are cream-white in color with a purple streak at the base that expands to cover almost the entire surface of the ray florets in cooler temperatures, its cold hardiness at least to U.S.D.A. Zone 5a, and its resistance to powdery mildew and leaf spot.
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 Coreopsis plant named ‘Starlight’ as herein illustrated and described.
Read the full patent: US Plant Patent PP28005 in full — the complete specification, every figure, and the file history.