US Plant Patent PP13884
Double Spotty
Dianthus plant named ‘Double Spotty’
PUBLIC DOMAIN
Patent expired March 15, 2021. This plant is in the public domain — anyone may propagate and sell it.
Twenty years from the filing date would end on March 5, 2021. This patent earned 10 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP13884
- Filed
- March 5, 2001
- Granted
- June 17, 2003
- Expires
- March 15, 2021
- Inventor
- FLEMING DAVID W; ZWETZIG GRETCHEN A
Abstract
A new and distinct cultivar of winter hardy Dianthus plant named ‘Double Spotty’ is the result of a unique hybridization. This new and distinct cultivar is characterized primarily as to novelty by its extreme cold hardiness to Zone 4, its cherry red flowers like Spotty but having multiple rows of petals. This everblooming cultivar has a nice compact form with vigorous growth.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
We claim: 1. A new and distinct cultivar of Dianthus plant, as herein shown and described, characterized by its neat and compact blue-green foliage, its enhanced Spotty-like flowers of cherry red with soft pink spots and its “everblooming” vigor, and its hardiness.
Read the full patent: US Plant Patent PP13884 in full — the complete specification, every figure, and the file history.