US Plant Patent PP28100
Windy City
Allium hybrid plant named ‘Windy City’
UNDER PATENT
Still under patent. Protection ends November 17, 2035.
Twenty years from the filing date would end on June 29, 2035. This patent earned 141 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP28100
- Filed
- June 29, 2015
- Granted
- June 13, 2017
- Expires
- November 17, 2035
- Assignee
- HORVATH BRENT
- Inventor
- HORVATH BRENT
Abstract
A new, distinct Allium hybrid plant as shown and described, characterized by dark green foliage in combination with purple-violet flowers, on semi-sterile plants.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
I claim: 1. A new, distinct Allium hybrid plant as shown and described, characterized by dark green foliage in combination with purple-violet flowers, on semi-sterile plants.
Read the full patent: US Plant Patent PP28100 in full — the complete specification, every figure, and the file history.