US Plant Patent PP29162
TNHEUNEL
Heuchera plant named ‘TNHEUNEL’
UNDER PATENT
Still under patent. Protection ends November 18, 2036.
Twenty years from the filing date would end on November 7, 2036. This patent earned 11 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP29162
- Filed
- November 7, 2016
- Granted
- March 27, 2018
- Expires
- November 18, 2036
- Assignee
- TERRA NOVA NURSERIES INC
- Inventor
- EGGER JANET N
Abstract
A new and distinct Heuchera plant characterized by yellow to lime colored leaves, medium large, slightly lobed, geranium like leaves, rust red flowers in narrow spikes in spring on upright flowering stems, good sun tolerance, a large, mounding habit with excellent crown count, and excellent vigor.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
I claim: 1. A new and distinct Heuchera plant as herein illustrated and described.
Read the full patent: US Plant Patent PP29162 in full — the complete specification, every figure, and the file history.