US Plant Patent PP23387
PIIHP-I
Hydrangea paniculata plant named ‘PIIHP-I’
UNDER PATENT
Still under patent. Protection ends June 15, 2031.
Twenty years from the filing date would end on March 7, 2031. This patent earned 100 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP23387
- Filed
- March 7, 2011
- Granted
- February 12, 2013
- Expires
- June 15, 2031
- Inventor
- DIRR MICHAEL
Abstract
A new and distinct cultivar of Hydrangea paniculata plant named ‘PIIHP-I’, characterized by its compact rounded growth habit; strong stems that hold the inflorescences upright and do not splay; thick, dark green foliage; and solid inflorescences in which the showy white sepals cover the fertile flowers.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
1. A new and distinct Hydrangea paniculata plant named ‘PIIHP-I’, substantially as illustrated and described herein.
Read the full patent: US Plant Patent PP23387 in full — the complete specification, every figure, and the file history.