US Plant Patent PP15031
Snow Valley
Clematis plant named ‘Snow Valley’
PUBLIC DOMAIN
Patent expired January 20, 2023. This plant is in the public domain — anyone may propagate and sell it.
Twenty years from the filing date would end on September 11, 2022. This patent earned 131 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP15031
- Filed
- September 11, 2002
- Granted
- July 27, 2004
- Expires
- January 20, 2023
- Inventor
- WHITE ANTHONY ROBIN
Abstract
A new cultivar of Clematis named ‘Snow Valley’ that is characterized by a compact habit, fernlike foliage and a profuse display of cream-white female flowers in spring. In combination these traits set ‘Snow Valley’ apart from all other existing varieties of Clematis known to the inventor.
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 variety of Clematis plant named ‘Snow Valley’ as described and illustrated.
Read the full patent: US Plant Patent PP15031 in full — the complete specification, every figure, and the file history.