US Plant Patent PP17701
Lost Hills
Female pistachio tree named ‘Lost Hills’
PUBLIC DOMAIN
Patent expired June 22, 2025. This plant is in the public domain — anyone may propagate and sell it.
Twenty years from the filing date would end on March 21, 2025. This patent earned 93 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP17701
- Filed
- March 21, 2005
- Granted
- May 8, 2007
- Expires
- June 22, 2025
- Assignee
- UNIV CALIFORNIA
- Inventor
- PARFITT DAN E; MARANTO JOSEPH; KALLSEN CRAIG E
Abstract
A new and distinct variety of pistachio tree denominated ‘Lost Hills’ is described. This selections most significant advantage is the superior size and appearance of the in-shell nut. The variety is less chilling sensitive than ‘Kerman’ which improves uniformity of foliation, bloom, nut set, nut fill and uniformity of nut maturity at harvest.
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 pistachio tree substantially as shown and described herein.
Read the full patent: US Plant Patent PP17701 in full — the complete specification, every figure, and the file history.