US Plant Patent PP23871
Agrihydratwaalf
Hydrangea plant named ‘Agrihydratwaalf’
UNDER PATENT
Still under patent. Protection ends January 16, 2032.
Twenty years from the filing date would end on September 24, 2031. This patent earned 114 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP23871
- Filed
- September 24, 2011
- Granted
- September 3, 2013
- Expires
- January 16, 2032
- Assignee
- ARTS NIELS, AGRIOM B V
- Inventor
- ARTS NIELS
Abstract
A new and distinct cultivar of Hydrangea plant named ‘Agrihydratwaalf’, characterized by its upright and somewhat outwardly spreading plant habit; vigorous growth habit; strong and sturdy stems; freely flowering habit with numerous sterile and fertile flowers per inflorescence; large mophead inflorescences with white-colored flowers with dark red-colored margins; and short production time as a cooling treatment is not required for flower development.
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 ‘Agrihydratwaalf’ as illustrated and described.
Read the full patent: US Plant Patent PP23871 in full — the complete specification, every figure, and the file history.