US Plant Patent PP17139
G.41
Apple tree rootstock named ‘G.41’
PUBLIC DOMAIN
Patent expired February 16, 2025. This plant is in the public domain — anyone may propagate and sell it.
Twenty years from the filing date would end on January 31, 2025. This patent earned 16 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP17139
- Filed
- January 31, 2005
- Granted
- October 10, 2006
- Expires
- February 16, 2025
- Assignee
- CORNELL RES FOUNDATION INC
- Inventor
- CUMMINS JAMES; ALDWINCKLE HERBERT; ROBINSON TERENCE; FAZIO GENNARO
Abstract
A new and distinct variety of apple tree rootstock Malus domestica×Malus robusta hybrid ‘G.41’ is described herein. The new variety is a dwarfing rootstock that is resistant to fire blight ( Erwinia amylovora ) and crown rot ( Phytophthora cactorum ). The ‘G.41’ rootstock is useful in that it can be propagated clonally and used as a rootstock or root system for apple trees as well as for interstems of apple trees.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
1. A new and distinct variety of apple tree named ‘G.41’ herein described and illustrated.
Read the full patent: US Plant Patent PP17139 in full — the complete specification, every figure, and the file history.