US Plant Patent PP16284
Autumn King
Grapevine denominated ‘Autumn King’
PUBLIC DOMAIN
Patent expired March 8, 2025. This plant is in the public domain — anyone may propagate and sell it.
Twenty years from the filing date would end on September 28, 2024. This patent earned 161 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP16284
- Filed
- September 28, 2004
- Granted
- February 21, 2006
- Expires
- March 8, 2025
- Assignee
- US AGRICULTURE
- Inventor
- RAMMING DAVID W; TARAILO RONALD E
Abstract
A new and distinct variety of grapevine denominated ‘Autumn King’ which is characterized by its late season ripening seedless fruit, attractive pale green coloration, its cylindrical to ovoid fruit shape, its firm fruit texture with neutral sweet flavor, and its medium to tight cluster.
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 grapevine plant, ‘Autumn King’, substantially as illustrated and described, characterized by its attractive pale green fruit color, cylindrical to ovoid fruit shape, and firm flesh texture with a neutral sweet flavor.
Read the full patent: US Plant Patent PP16284 in full — the complete specification, every figure, and the file history.