US Plant Patent PP25577
HORWACK
Hydrangea plant named ‘HORWACK’
UNDER PATENT
Still under patent. Protection ends August 24, 2033.
Twenty years from the filing date would end on May 8, 2033. This patent earned 108 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP25577
- Filed
- May 8, 2013
- Granted
- May 26, 2015
- Expires
- August 24, 2033
- Inventor
- MEINL KATRIN
Abstract
A new cultivar of Hydrangea macrophylla named ‘HORWACK’ that is characterized by its mophead type inflorescences with showy fertile flowers and smaller less numerous non-showy fertile flowers. its showy flowers that are bicolor with bright green and deep pink sepals, its remontant blooming habit, blooming in mid summer and repeat blooming in fall, its remontant blooming habit, its act plant habit with good branching, and its good disease resistance to powdery mildew and botrytis.
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 Hydrangea plant named ‘HORWACK’ substantially as herein illustrated and described.
Read the full patent: US Plant Patent PP25577 in full — the complete specification, every figure, and the file history.