US Plant Patent PP20668
Seibig
Hypericum plant named ‘Seibig’
UNDER PATENT
Still under patent. Protection ends August 21, 2028.
Twenty years from the filing date would end on June 4, 2027. This patent earned 444 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP20668
- Filed
- June 4, 2007
- Granted
- January 26, 2010
- Expires
- August 21, 2028
- Assignee
- SEIDLER THOMAS
- Inventor
- SEIDLER THOMAS
Abstract
A new and distinct cultivar of Hypericum plant named ‘Seibig’, characterized by its yellow-colored flowers, large, dark red-colored fruit, dark green-colored foliage, and vigorous, upright growth habit.
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 Hypericum plant named ‘Seibig’, substantially as herein shown and described.
Read the full patent: US Plant Patent PP20668 in full — the complete specification, every figure, and the file history.