US Plant Patent PP25912
STO3
Cherry rootstock plant named ‘STO3’
UNDER PATENT
Still under patent. Protection ends December 5, 2033.
Twenty years from the filing date would end on August 27, 2033. This patent earned 100 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP25912
- Filed
- August 27, 2013
- Granted
- September 22, 2015
- Expires
- December 5, 2033
- Assignee
- Peter Stoppel Obstbau
- Inventor
- STOPPEL PETER
Abstract
A new and distinct cultivar of Prunus plant named ‘STO3,’ characterized by its upright plant habit and typical hybrid growth; good adaptation to hot and dry conditions; and as a rootstock, slow vegetative growth imparts uniformity, higher yield and better fertility to the grafted variety as compared to a standard rootstock such as Gisela 5, F12/1 and Mazzard.
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 cultivar of Prunus cerasus L.× P.×schmittii Rehder plant named ‘STO3,’ substantially as illustrated and described herein.
Read the full patent: US Plant Patent PP25912 in full — the complete specification, every figure, and the file history.