US Plant Patent PP21933
Happy Trails
Tiarella plant named ‘Happy Trails’
UNDER PATENT
Still under patent. Protection ends January 2, 2030.
Twenty years from the filing date would end on December 14, 2029. This patent earned 19 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP21933
- Filed
- December 14, 2009
- Granted
- May 24, 2011
- Expires
- January 2, 2030
- Assignee
- TERRA NOVA NURSERIES INC
- Inventor
- EGGER JANET N
Abstract
A new and distinct cultivar of Tiarella plant characterized by small palmately-lobed leaves, with the terminal lobe the longest, an excellent trailing habit, distinct, dark brown markings following the veins, and excellent vigor.
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 Tiarella plant herein illustrated and described.
Read the full patent: US Plant Patent PP21933 in full — the complete specification, every figure, and the file history.