US Plant Patent PP17829
Looking Glass
Brunnera macrophylla plant named ‘Looking Glass’
PUBLIC DOMAIN
Patent expired April 15, 2026. This plant is in the public domain — anyone may propagate and sell it.
Twenty years from the filing date would end on December 1, 2023. This patent earned 866 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP17829
- Filed
- December 1, 2003
- Granted
- June 26, 2007
- Expires
- April 15, 2026
- Assignee
- WALTERS GARDENS INC
- Inventor
- FALSTAD CLARENCE H; WALTERS JOHN D
Abstract
The new and distinctive cultivar of Brunnera named ‘Looking Glass’ with light blue flowers in the spring and characterized by an intense silver coating on top of the leaves, suitable for specimen or mass landscape usage, or potted culture.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
1. A new and distinct perennial Brunnera macrophylla plant named ‘Looking Glass’ as herein described and illustrated.
Read the full patent: US Plant Patent PP17829 in full — the complete specification, every figure, and the file history.