US Plant Patent PP27319
Pistachio rootstock tree named Wonderful Pistachio Rootstock #4
UNDER PATENT
Still under patent. Protection ends March 2, 2035.
Twenty years from the filing date would end on December 9, 2034. This patent earned 83 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP27319
- Filed
- December 9, 2014
- Granted
- November 1, 2016
- Expires
- March 2, 2035
- Assignee
- Wonderful Orchards LLC
- Inventor
- MACILVAINE JOSEPH; MERCURE ERIC; ETCHAMENDY JOHN
No cultivar name of record
This patent does not name the plant, which is unusual for its date — by the mid-1990s nearly every plant patent carried a cultivar name. The grant identifies this one by its number and by a written description instead.
Nothing here is missing from our records: the patent itself states no name. Where one exists we show it, and we do not invent one.
Abstract
A new and distinct variety of pistachio tree, cv. Paramount Pistachio Rootstock #4, is characterized by producing large leaves, reddish-green new foliage, and dark green mature foliage. The new variety is useful as a rootstock for commercial nut bearing pistachio varieties. A new and distinct variety of pistachio tree, cv. ‘Wonderful Pistachio Rootstock #4’, is characterized by producing large leaves, reddish-green new foliage, and dark green mature foliage. The new variety is useful as a rootstock for commercial nut bearing pistachio varieties.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
What is claimed is: 1. A new and distinct variety of pistachio tree as herein illustrated and described.
Read the full patent: US Plant Patent PP27319 in full — the complete specification, every figure, and the file history.