US Plant Patent PP23838
Nimbus
Forsythia plant named ‘Nimbus’
UNDER PATENT
Still under patent. Protection ends January 5, 2032.
Twenty years from the filing date would end on September 23, 2031. This patent earned 104 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP23838
- Filed
- September 23, 2011
- Granted
- August 20, 2013
- Expires
- January 5, 2032
- Assignee
- PINEAU PATRICK, PEPINIERES MINIER SA
- Inventor
- PINEAU PATRICK
Abstract
A new and distinct cultivar of Forsythia plant named ‘Nimbus’, characterized by its compact, upright and outwardly spreading plant habit; vigorous growth habit; freely branching habit; dense and bushy growth habit; freely and continuous flowering habit; long flowering period; bright yellow-colored flowers; resistance to Phytophthora ; and good garden performance.
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 Forsythia plant named ‘Nimbus’ as illustrated and described.
Read the full patent: US Plant Patent PP23838 in full — the complete specification, every figure, and the file history.