US Plant Patent PP17947
Merensky 1
Avocado rootstock named ‘Merensky 1’
PUBLIC DOMAIN
Patent expired May 11, 2025. This plant is in the public domain — anyone may propagate and sell it.
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
- PP17947
- Filed
- May 11, 2005
- Granted
- August 28, 2007
- Expires
- May 11, 2025
- Assignee
- WESTFALIA TECHNOLOGICAL SERVIC
- Inventor
- DARVAS JOZSEF
Abstract
A new and distinct variety of Persea americana tree having strong resistance to Phytophthora cinnamomi and tolerance to salinity, and used as a rootstock.
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 Persea americana plant as illustrated and described.
Read the full patent: US Plant Patent PP17947 in full — the complete specification, every figure, and the file history.