US Plant Patent PP15397
Wilma
Spiraea plant named ‘Wilma’
PUBLIC DOMAIN
Patent expired March 15, 2023. This plant is in the public domain — anyone may propagate and sell it.
Twenty years from the filing date would end on August 31, 2022. This patent earned 196 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP15397
- Filed
- August 31, 2002
- Granted
- December 7, 2004
- Expires
- March 15, 2023
- Assignee
- SPRING MEADOW NURSERY INC
- Inventor
- WOOD TIMOTHY D
Abstract
A distinct cultivar of Spiraea plant named ‘Wilma’, characterized by its upright and rounded plant habit; freely branching growth habit; red-colored young leaves; freely flowering habit; vibrant pink-colored flowers; and excellent garden performance.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
It is claimed: 1. A new and distinct cultivar of Spiraea plant named ‘Wilma’, as illustrated and described.
Read the full patent: US Plant Patent PP15397 in full — the complete specification, every figure, and the file history.