US Plant Patent PP28773
Russetted Bartlett pear tree
UNDER PATENT
Still under patent. Protection ends November 6, 2035.
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
- PP28773
- Filed
- November 6, 2015
- Granted
- December 19, 2017
- Expires
- November 6, 2035
- Inventor
- KEITHLY DOUG
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 cultivar of Bartlett pear tree named ‘Russetted Bartlett’ characterized particularly by producing fruit that has the overall appearance of a typical Bartlett pear, but is somewhat larger, totally russetted at maturity, and ripens later than typical Bartlett fruit.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
The invention claimed is: 1. What is claimed is a new and distinct cultivar of Bartlett pear tree named ‘Russetted Bartlett’ substantially as herein shown and described, particularly characterized over known Bartlett pear trees by producing fruit that has the overall appearance of a typical Bartlett pear, but is totally russetted at maturity. The russetted color is an attractive copper finish at full maturity and its ripening at about September 6 th in Yakima, Wash. or about a week later as compared to regular Bartlett. ‘Russetted Bartlett’ is characterized by ability to be stored at 32° F. for approximately eight months while retaining its quality. Originator believes ‘Russetted Bartlett’ runs slightly larger than regular Bartlett. The fruit has an appealing slightly sub-acid flavor.
Read the full patent: US Plant Patent PP28773 in full — the complete specification, every figure, and the file history.