US Plant Patent PP26221
H213901
Hydrangea plant named ‘H213901’
UNDER PATENT
Still under patent. Protection ends May 6, 2034.
Twenty years from the filing date would end on March 27, 2034. This patent earned 40 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP26221
- Filed
- March 27, 2014
- Granted
- December 15, 2015
- Expires
- May 6, 2034
- Assignee
- HYDRANGEA BREEDERS ASS B V, ARTS NIELS
- Inventor
- ARTS NIELS
Abstract
A new and distinct cultivar of Hydrangea plant named ‘H213901’, characterized by its upright and somewhat outwardly spreading plant habit; vigorous growth habit; freely branching habit; strong and sturdy stems; freely and uniformly flowering habit; and mophead-type inflorescences with numerous dark red purple-colored sterile flowers with undulate margins and apices.
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 Hydrangea plant named ‘H213901’ as illustrated and described.
Read the full patent: US Plant Patent PP26221 in full — the complete specification, every figure, and the file history.