US Plant Patent PP28305
Synstokhar
Stokesia plant named ‘Synstokhar’
UNDER PATENT
Still under patent. Protection ends February 1, 2036.
Twenty years from the filing date would end on December 15, 2035. This patent earned 48 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP28305
- Filed
- December 15, 2015
- Granted
- August 15, 2017
- Expires
- February 1, 2036
- Inventor
- STEMKENS HENRICUS GODEFRIDUS WILHELMUS
Abstract
A new and distinct cultivar of Stokesia plant named ‘Synstokhar’, characterized by its upright to low spreading plant habit; moderately vigorous to vigorous growth habit; freely branching growth habit; relatively short flowering stems; freely flowering habit; large inflorescences with pale violet-colored ray florets; and good garden performance.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
It is claimed: 1. A new and distinct Stokesia plant named ‘Synstokhar’ as illustrated and described.
Read the full patent: US Plant Patent PP28305 in full — the complete specification, every figure, and the file history.