US Plant Patent PP20269
Sidaselm
Hydrangea plant named ‘Sidaselm’
UNDER PATENT
Still under patent. Protection ends October 18, 2027.
Twenty years from the filing date would end on September 22, 2027. This patent earned 26 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP20269
- Filed
- September 22, 2007
- Granted
- September 8, 2009
- Expires
- October 18, 2027
- Assignee
- VAN DER SPEK DANIEL
- Inventor
- VAN DER SPEK DANIEL
Abstract
A new and distinct Hydrangea cultivar named ‘Sidaselm’ is disclosed, characterized by light red flowers with white veins. The new variety is a Hydrangea, and naturally blooms from April through September.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
1. A new and distinct cultivar of Hydrangea plant named ‘Sidaselm’ as herein illustrated and described.
Read the full patent: US Plant Patent PP20269 in full — the complete specification, every figure, and the file history.