US Plant Patent PP27217
Radioactive
Coreopsis plant named ‘Radioactive’
UNDER PATENT
Still under patent. Protection ends April 13, 2035.
Twenty years from the filing date would end on July 22, 2034. This patent earned 265 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP27217
- Filed
- July 22, 2014
- Granted
- September 27, 2016
- Expires
- April 13, 2035
- Assignee
- PROBST DARRELL R
- Inventor
- PROBST DARRELL R
Abstract
A new cultivar of hybrid Coreopsis named ‘Radioactive’ that is characterized by its large inflorescences with ray florets having an upper surface with a base color that is gold and heavily suffused with scarlet red with an overall effect of red-orange with golden tips appearing when plants are grown under hot temperatures and having a lower surface that has red centers and gold margins, its vigorous growth habit with healthy foliage, its low growing plant habit, spreading outward from above ground stems that are well branched without the need for pinching, its very good resistance to powdery mildew and leaf spot, and its reliably perennial habit in U.S.D.A. Zone 5.
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 ‘Radioactive’ as herein illustrated and described.
Read the full patent: US Plant Patent PP27217 in full — the complete specification, every figure, and the file history.