US Plant Patent PP27437
ROYAL LETTY
Cherry tree named ‘ROYAL LETTY’
UNDER PATENT
Still under patent. Protection ends June 28, 2035.
Twenty years from the filing date would end on February 20, 2035. This patent earned 128 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP27437
- Filed
- February 20, 2015
- Granted
- December 6, 2016
- Expires
- June 28, 2035
- Inventor
- ZAIGER GARY NEIL; GARDNER LEITH MARIE; ZAIGER GRANT GENE
Abstract
A new and distinct variety of cherry tree. The following features of the tree and its fruit are characterized with the tree budded on ‘Mahaleb’ Rootstock (non-patented), grown on Handford sandy loam soil with Storie Index rating 95, in USDA Hardiness Zone 9, near Modesto, Calif., with standard commercial fruit growing practices, such as pruning, thinning, spraying, irrigation and fertilization. Its novelty consist of the following combination of desirable features: 1. Tree with a vigorous, upright growth habit. 2. Regular and productive bearer of medium to large size fruit. 3. Fruit with an attractive red skin color. 4. Fruit with firm flesh that has good handling and shipping qualities. 5. Fruit with very good flavor and eating quality with a good balance between acid and sugar.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
It is claimed: 1. A new and distinct variety of cherry tree ( Prunus avium ), substantially as illustrated and described.
Read the full patent: US Plant Patent PP27437 in full — the complete specification, every figure, and the file history.