US Plant Patent PP23870
Zobast
Clematis plant named ‘Zobast’
UNDER PATENT
Still under patent. Protection ends April 27, 2032.
Twenty years from the filing date would end on February 10, 2032. This patent earned 77 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP23870
- Filed
- February 10, 2012
- Granted
- September 3, 2013
- Expires
- April 27, 2032
- Assignee
- J VAN ZOEST BEHEER B V, VAN ZOEST JAN
- Inventor
- VAN ZOEST JAN
Abstract
A new cultivar of hybrid Clematis , ‘Zobast’, characterized by its upright, star-shaped, single to occasionally double flowers that are white in color, its ability to bloom in spring and even more abundantly in summer, its near sterility, and its cold hardiness to at least U.S.D.A. Zone 6.
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 cultivar of Clematis plant named ‘Zobast’ as herein illustrated and described.
Read the full patent: US Plant Patent PP23870 in full — the complete specification, every figure, and the file history.