US Plant Patent PP17174
Powder Puff
Campanula plant named ‘Powder Puff’
PUBLIC DOMAIN
Patent expired June 15, 2025. This plant is in the public domain — anyone may propagate and sell it.
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
- PP17174
- Filed
- June 15, 2005
- Granted
- October 24, 2006
- Expires
- June 15, 2025
- Assignee
- TERRA NOVA NURSERIES INC
- Inventor
- KORLIPARA HARINI
Abstract
A new and distinct cultivar of Campanula persicifolia plant characterized by large, very double, white flowers and strong, thick stems.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
1. A new and distinct Campanula persicifolia plant substantially as herein illustrated and described.
Read the full patent: US Plant Patent PP17174 in full — the complete specification, every figure, and the file history.