US Plant Patent PP21080
WATERLOO SUNSET
Dianthus plant named ‘WATERLOO SUNSET’
UNDER PATENT
Still under patent. Protection ends August 18, 2028.
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
- PP21080
- Filed
- August 18, 2008
- Granted
- June 22, 2010
- Expires
- August 18, 2028
- Assignee
- WHETMAN JOHN
- Inventor
- WHETMAN JOHN
Abstract
A new cultivar of Dianthus plant named ‘WATERLOO SUNSET’ that is characterized by compact habit, grey-green foliage, and double flowers that are deep magenta red with a deep port wine colored center. In combination these traits set ‘WATERLOO SUNSET’ apart from all other existing varieties of Dianthus known to the inventor.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
1. A new and distinct cultivar of Dianthus plant named ‘WATERLOO SUNSET’ as described and illustrated herein.
Read the full patent: US Plant Patent PP21080 in full — the complete specification, every figure, and the file history.