US Plant Patent PP16318
Yoballad
Aster plant named ‘Yoballad’
PUBLIC DOMAIN
Patent expired February 11, 2025. This plant is in the public domain — anyone may propagate and sell it.
Twenty years from the filing date would end on January 28, 2025. This patent earned 14 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP16318
- Filed
- January 28, 2005
- Granted
- March 7, 2006
- Expires
- February 11, 2025
- Assignee
- YODER BROTHERS INC
- Inventor
- SMITH MARK A
Abstract
A new and distinct cultivar of Aster plant named ‘Yoballad’, characterized by its uniform, outwardly spreading and mounded plant habit; freely branching growth habit; dark green-colored foliage; uniform flowering habit; natural flowering season around September 2 nd ; daisy-type inflorescences with violet blue-colored ray florets; resistance to Powdery Mildew; and good garden performance.
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 Aster plant named ‘Yoballad’, as illustrated and described.
Read the full patent: US Plant Patent PP16318 in full — the complete specification, every figure, and the file history.