US Plant Patent PP20372
Zostiwa
Clematis plant named ‘Zostiwa’
UNDER PATENT
Still under patent. Protection ends August 8, 2028.
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
- PP20372
- Filed
- August 8, 2008
- Granted
- September 29, 2009
- Expires
- August 8, 2028
- Assignee
- SNOEIJER WIM
- Inventor
- SNOEIJER WIM
Abstract
A new cultivar of hybrid Clematis , ‘Zostiwa’, characterized by its free-flowering habit, its upright facing violet-blue flowers combined with numerous red-purple tipped stamens, its climbing growth habit, and its cold hardiness to U.S.D.A. Zone 6.
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 Clematis plant named ‘Zostiwa’ as herein illustrated and described.
Read the full patent: US Plant Patent PP20372 in full — the complete specification, every figure, and the file history.