US Plant Patent PP21227
PIIHA-I
Hydrangea arborescens plant named ‘PIIHA-I’
UNDER PATENT
Still under patent. Protection ends September 11, 2028.
Twenty years from the filing date would end on September 4, 2028. This patent earned 7 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP21227
- Filed
- September 4, 2008
- Granted
- August 24, 2010
- Expires
- September 11, 2028
- Assignee
- PLANT INTRODUCTIONS INC
- Inventor
- DIRR MICHAEL
Abstract
A new and distinct cultivar of Hydrangea arborescens plant named ‘PIIHA-I’, characterized by its magenta to pink mophead inflorescences; dark green foliage; and upright, spreading 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 Hydrangea arborescens plant named ‘PIIHA-I’, as illustrated and described herein.
Read the full patent: US Plant Patent PP21227 in full — the complete specification, every figure, and the file history.