US Plant Patent PP14836
Obsidian
Heuchera plant named ‘Obsidian’
PUBLIC DOMAIN
Patent expired July 5, 2023. This plant is in the public domain — anyone may propagate and sell it.
Twenty years from the filing date would end on June 2, 2023. This patent earned 33 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP14836
- Filed
- June 2, 2003
- Granted
- May 25, 2004
- Expires
- July 5, 2023
- Assignee
- TERRA NOVA NURSERIES INC
- Inventor
- HEIMS DANIEL M
Abstract
A new and distinct hybrid of Heuchera plant characterized by dark, almost black leaves and a compact habit.
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 hybrid of Heuchera plant substantially as shown and described, characterized by dark, almost black leaves and a compact habit.
Read the full patent: US Plant Patent PP14836 in full — the complete specification, every figure, and the file history.