US Plant Patent PP13706
Silver Wings
Brunnera plant named ‘Silver Wings’
PUBLIC DOMAIN
Patent expired July 30, 2021. This plant is in the public domain — anyone may propagate and sell it.
Twenty years from the filing date would end on July 17, 2021. This patent earned 13 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP13706
- Filed
- July 17, 2001
- Granted
- April 1, 2003
- Expires
- July 30, 2021
- Inventor
- HIRSCH JACK E; LINDHEIMER GARY T
Abstract
A new cultivar of Brunnera named ‘Silver Wings’ that is characterized by gray-green foliage that is variegated with thin cram-white margins and a silver overlay on the surface of the leaves. ‘Silver Wings’ exhibits a clumping habit and small clusters of violet-blue flowers are present in late spring. In combination these traits set ‘Silver Wings’ apart from all other existing varieties of Brunnera known to the inventor.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
We claim: 1. A new and distinct variety of Brunnera plant named ‘Silver Wings’ as described and illustrated.
Read the full patent: US Plant Patent PP13706 in full — the complete specification, every figure, and the file history.