US Plant Patent PP31843
Darling Clementine
Coreopsis plant named ‘Darling Clementine’
UNDER PATENT
Still under patent. Protection ends September 19, 2039.
No term adjustment or disclaimer is recorded against this patent, so this is the full statutory term — twenty years from the filing date.

The record
- Patent number
- PP31843
- Filed
- September 19, 2019
- Granted
- June 2, 2020
- Expires
- September 19, 2039
- Assignee
- PROBST DARRELL R
- Inventor
- PROBST DARRELL R
Abstract
A new cultivar of hybrid Coreopsis plant named ‘Darling Clementine’ that is characterized by its compact plant habit reaching an average of 40 cm in height and 60 cm in width, its floriferous and long blooming season of its sterile inflorescences that do not require deadheading; bloom commences in mid-June and lasts until frost in Kensington, Conn., its large sized inflorescences with ray florets that are medium orange in color and flushed with yellow near the tips, its resistance to powdery mildew (Podosphaera macularis) and leafspot (Pseudomonas cichorii), and its cold hardiness at least to U.S.D.A. Zone 4.
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 ‘Darling Clementine’ as herein illustrated and described.
Read the full patent: US Plant Patent PP31843 in full — the complete specification, every figure, and the file history.