US Plant Patent PP19832
Maxross
Helianthemum plant named ‘Maxross’
UNDER PATENT
Still under patent. Protection ends November 9, 2027.
Twenty years from the filing date would end on October 29, 2027. This patent earned 11 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP19832
- Filed
- October 29, 2007
- Granted
- March 17, 2009
- Expires
- November 9, 2027
- Assignee
- HART MICHAEL
- Inventor
- HART MICHAEL
Abstract
A new Helianthemum plant particularly distinguished as a hardy, evergreen, semi-compact and low-growing shrub with red-purple flowers and yellow stamens, 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 Helianthemum plant as shown and described herein.
Read the full patent: US Plant Patent PP19832 in full — the complete specification, every figure, and the file history.