US Plant Patent PP20820
Shirrmann's Nordlicht
Metasequoia glyptostroboides plant named ‘Shirrmann's Nordlicht’
UNDER PATENT
Still under patent. Protection ends December 18, 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
- PP20820
- Filed
- December 18, 2008
- Granted
- March 9, 2010
- Expires
- December 18, 2028
- Assignee
- KOOLS CORNELIUS
- Inventor
- KOOLS CORNELIUS
Abstract
A new and distinct cultivar of Metasequoia plant named ‘Shirrmann's Nordlicht’, characterized by its medium green-colored leaves occasionally with greenish-white axial variegation, globe-shaped compact growth habit, and good garden performance, is disclosed.
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 Metasequoia plant named ‘Shirrmann's Nordlicht’, substantially as herein shown and described.
Read the full patent: US Plant Patent PP20820 in full — the complete specification, every figure, and the file history.