US Plant Patent PP16453
Sizzleness Purple
Chrysanthemum plant named ‘Sizzleness Purple’
PUBLIC DOMAIN
Patent expired February 3, 2025. This plant is in the public domain — anyone may propagate and sell it.
Twenty years from the filing date would end on November 3, 2024. This patent earned 92 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP16453
- Filed
- November 3, 2004
- Granted
- April 18, 2006
- Expires
- February 3, 2025
- Assignee
- CHRYSANTHEMUM BREEDERS ASS NV
- Inventor
- BOEDER MARK ROLAND
Abstract
A Chrysanthemum plant named ‘Sizzleness Purple’ characterized by its medium size decorative infloresences with elongated quilled purple ray-florets, with a response time of 52 days.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
1. A new and distinct variety of chrysanthemum plant as described and illustrated.
Read the full patent: US Plant Patent PP16453 in full — the complete specification, every figure, and the file history.