US Plant Patent PP20440
WP Passion
Dianthus plant named ‘WP Passion’
UNDER PATENT
Still under patent. Protection ends July 29, 2028.
Twenty years from the filing date would end on July 24, 2028. This patent earned 5 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP20440
- Filed
- July 24, 2008
- Granted
- October 27, 2009
- Expires
- July 29, 2028
- Assignee
- WHETMAN JOHN
- Inventor
- WHETMAN JOHN
Abstract
A new cultivar of Dianthus plant named ‘WP PASSION’ that is characterized by pronounced compact habit, grey-green foliage, and large deep red double flowers. In combination these traits set ‘WP PASSION’ 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 ‘WP PASSION’ as described and illustrated herein.
Read the full patent: US Plant Patent PP20440 in full — the complete specification, every figure, and the file history.