US Plant Patent PP18648
Stolwijk Gold
Clematis plant named ‘Stolwijk Gold’
UNDER PATENT
Still under patent. Protection ends October 19, 2026.
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
- PP18648
- Filed
- October 19, 2006
- Granted
- March 25, 2008
- Expires
- October 19, 2026
- Assignee
- Q C STOLWIJK & CO B V, RIJNBEEK & SON B V
- Inventor
- STOLWIJK HANS
Abstract
A new and distinct cultivar of Clematis plant named ‘Stolwijk Gold’, characterized by its upright and vining plant habit; uniquely yellow green-colored foliage; freely flowering habit; and violet blue-colored flowers.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
1. A new and distinct Clematis plant named ‘Stolwijk Gold’ as illustrated and described.
Read the full patent: US Plant Patent PP18648 in full — the complete specification, every figure, and the file history.