US Plant Patent PP18144
Silver Shadow
Peperomia plant named ‘Silver Shadow’
PUBLIC DOMAIN
Patent expired December 3, 2025. This plant is in the public domain — anyone may propagate and sell it.
Twenty years from the filing date would end on November 25, 2025. This patent earned 8 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP18144
- Filed
- November 25, 2005
- Granted
- October 23, 2007
- Expires
- December 3, 2025
- Assignee
- SCHOENMAKERS TROPISCHE POTCULT
- Inventor
- SCHOENMAKERS KEES
Abstract
A new cultivar of Peperomia plant named ‘Silver Shadow’ that is characterized by a broad upright growth habit and white and green leaves.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
1. A new and distinct variety of Peperomia plant named ‘Silver Shadow’ as described and illustrated.
Read the full patent: US Plant Patent PP18144 in full — the complete specification, every figure, and the file history.