US Plant Patent PP31444
Olsen Bosc
Pear tree named ‘Olsen Bosc’
UNDER PATENT
Still under patent. Protection ends January 22, 2039.
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
- PP31444
- Filed
- January 22, 2019
- Granted
- February 18, 2020
- Expires
- January 22, 2039
- Assignee
- OLSEN DAVID
- Inventor
- OLSEN DAVID
Abstract
The ‘Olsen Bosc’ pear tree, a mutation of ‘Bosc’, is notable for its distinctive fruit. Profound russeting on substantially the entire surface of the skin gives ‘Olsen Bosc’ pears a distinctive bronze appearance.
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 pear tree substantially as described and illustrated herein.
Read the full patent: US Plant Patent PP31444 in full — the complete specification, every figure, and the file history.