US Plant Patent PP21796
Stramalyn
Variety of Hydrangea plant named ‘Stramalyn’
UNDER PATENT
Still under patent. Protection ends May 19, 2029.
Twenty years from the filing date would end on April 2, 2029. This patent earned 47 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP21796
- Filed
- April 2, 2009
- Granted
- March 22, 2011
- Expires
- May 19, 2029
- Inventor
- RAMPP FRANZ-XAVER
Abstract
A new and distinct Hydrangea plant having pink-colored flowers and black-colored, strong stems.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
1. A new and distinct variety of Hydrangea plant substantially as shown and described herein.
Read the full patent: US Plant Patent PP21796 in full — the complete specification, every figure, and the file history.