US Plant Patent PP16962
Karma Prospero
Dahlia plant named ‘Karma Prospero’
PUBLIC DOMAIN
Patent expired April 30, 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
- PP16962
- Filed
- April 30, 2005
- Granted
- August 8, 2006
- Expires
- April 30, 2025
- Assignee
- VERWER DAHLIAS B V
- Inventor
- VERWER AAD W M
Abstract
A distinct cultivar of Dahlia plant named ‘Karma Prospero’, characterized by its straight and strong flowering stems; freely basal branching growth habit; decorative-type inflorescence form; light red purple-colored ray florets; excellent garden performance; and excellent inflorescence longevity.
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 Dahlia plant named ‘Karma Prospero’, as illustrated and described.
Read the full patent: US Plant Patent PP16962 in full — the complete specification, every figure, and the file history.