US Plant Patent PP22261
Hokomathyst
Hydrangea plant named ‘Hokomathyst’
UNDER PATENT
Still under patent. Protection ends May 30, 2030.
Twenty years from the filing date would end on February 1, 2030. This patent earned 118 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP22261
- Filed
- February 1, 2010
- Granted
- November 22, 2011
- Expires
- May 30, 2030
- Inventor
- KOLSTER PETER R; EVELEENS CORNELIS P
Abstract
A new and distinct cultivar of Hydrangea plant named ‘Hokomathyst’, characterized by its broadly upright plant habit; strong erect stems; relatively small leaves; and mophead-type inflorescences with red purple-colored flowers with green-colored margins.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
1. A new and distinct Hydrangea plant named ‘Hokomathyst’ as illustrated and described.
Read the full patent: US Plant Patent PP22261 in full — the complete specification, every figure, and the file history.