US Plant Patent PP15925
Venus
Hybrid Calycanthus plant named ‘Venus’
PUBLIC DOMAIN
Patent expired November 24, 2023. This plant is in the public domain — anyone may propagate and sell it.
Twenty years from the filing date would end on July 9, 2023. This patent earned 138 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP15925
- Filed
- July 9, 2003
- Granted
- August 23, 2005
- Expires
- November 24, 2023
- Assignee
- UNIV NORTH CAROLINA STATE
- Inventor
- RANNEY THOMAS; EAKER THOMAS
Abstract
Calycanthus cultivar ‘Venus’ is a medium-sized, multi-stemmed shrub producing large, yellow-green flower buds that open to unique large, white magnolia-like flowers with yellow and purple infusions in the center. The flowers open widely, such that all of the tepals are visible, and are fragrant with the fruity aroma of strawberries and melons.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
1. A new and distinct hybrid cultivar of Calycanthus plant named ‘Venus’, substantially as illustrated and described herein.
Read the full patent: US Plant Patent PP15925 in full — the complete specification, every figure, and the file history.