US Plant Patent PP21668
Merritt White
Hydrangea plant named ‘Merritt White’
UNDER PATENT
Still under patent. Protection ends January 30, 2029.
No term adjustment or disclaimer is recorded against this patent, so this is the full statutory term — twenty years from the filing date.

The record
- Patent number
- PP21668
- Filed
- January 30, 2009
- Granted
- January 25, 2011
- Expires
- January 30, 2029
- Assignee
- BAY CITY FLOWER CO
- Inventor
- HIGAKI HARRISON MASAMI
Abstract
A new and distinct cultivar of Hydrangea macrophylla (Thunb.) named ‘Merritt White’ was found in a field of the patented cultivar ‘Ravel’—U.S. Plant Pat. No. 10,152. The cultivar ‘Merritt White’ has white sepals at maturity and is distinguished from other similar cultivars of which the inventor is aware by the unique manner in which the inflorescence ages. As the mature sepals age and turn green they are highly resistant to burning and turning brown. The new variety ‘Merritt White’ further possesses the favorable characteristics of a compact growth habit and long lasting large inflorescences.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
1. A new and distinct Hydrangea macrophylla plant named ‘Merritt White’ substantially as herein shown and described.
Read the full patent: US Plant Patent PP21668 in full — the complete specification, every figure, and the file history.