US Plant Patent PP12384
Grand Dad
Spathiphyllum plant named ‘Grand Dad’
PUBLIC DOMAIN
Patent expired June 2, 2020. This plant is in the public domain — anyone may propagate and sell it.
No term adjustment or disclaimer is recorded against this patent, so this is the full statutory term — twenty years from the filing date.

The record
- Patent number
- PP12384
- Filed
- June 2, 2000
- Granted
- February 5, 2002
- Expires
- June 2, 2020
- Assignee
- TWYFORD PLANT LAB INC
- Inventor
- LAMB ANN E; LILLY DAVID R; ALLAMAND RANDY L
Abstract
A new and distinct cultivar of Spathiphyllum plant named ‘Grand Dad’ particularly characterized by its large size and large, wide, dark-green leaves. The leaves of ‘Grand Dad’ are particularly shiny and relatively flexible, making them less prone to damage from transport. Plants of ‘Grand Dad’ are large and ideally suited for pot sizes of 20 cm or larger.
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 cultivar of Spathiphyllum plant named ‘Grand Dad’, as illustrated and described.
Read the full patent: US Plant Patent PP12384 in full — the complete specification, every figure, and the file history.