US Plant Patent PP28898
PKMP11
Campanula plant named ‘PKMP11’
UNDER PATENT
Still under patent. Protection ends December 16, 2035.
Twenty years from the filing date would end on November 2, 2035. This patent earned 44 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP28898
- Filed
- November 2, 2015
- Granted
- January 23, 2018
- Expires
- December 16, 2035
- Assignee
- GARTNERIET PKM AS
- Inventor
- MADSEN CHRISTIAN HALD
Abstract
A new and distinct cultivar of Campanula plant named ‘PKMP11’, characterized by its compact plant habit; globular plant form; vigorous growth habit; upright dark violet buds and flowers, and small leaves.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
I claim: 1. A new and distinct cultivar of Campanula plant named ‘PKMP11’, as illustrated and described herein.
Read the full patent: US Plant Patent PP28898 in full — the complete specification, every figure, and the file history.