US Plant Patent PP14321
UCMH 55
Mahaleb rootstock named ‘UCMH 55’
PUBLIC DOMAIN
Patent expired January 14, 2022. This plant is in the public domain — anyone may propagate and sell it.
Twenty years from the filing date would end on December 28, 2021. This patent earned 17 days of term adjustment for delay at the Patent Office, which is why it runs longer.
The record
- Patent number
- PP14321
- Filed
- December 28, 2001
- Granted
- November 25, 2003
- Expires
- January 14, 2022
- Assignee
- UNIV CALIFORNIA
- Inventor
- SOUTHWICK STEPHEN M
Abstract
A new and distinct cultivar of Prunus mahaleb is provided. The new cultivar is particularly well suited for serving as an understock during cherry production. A number of advantages are provided when compared to the standard Mahaleb rootstock. The cultivar is readily amenable to vegetative propagation (e.g., by the use of softwood cuttings), and exhibits improved resistance to Phytophthora spp. When used with a 'Bing' cherry scion, increased yields have been observed. The new cultivar when grown without use as an understock forms a tree that is intermediate in size and forms more fine wood when compared to the 'UCMH 56' and 'UCMH 59' cultivars that were products of the same research program.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
I claim: 1. A new and distinct cultivar of Prunus mahaleb plant that exhibits the following combination of characteristics: (a) readily is amenable to vegetative propagation, (b) performs well as an understock for cherry production, (c) forms a tree that is intermediate in size and forms more fine wood when compared to the ‘UCMH 56’ and ‘UCMH 59’ cultivars, and (d) displays improved resistance to Phytophthora spp.; substantially as illustrated and described.
Read the full patent: US Plant Patent PP14321 in full — the complete specification, every figure, and the file history.