US Plant Patent PP17863
Tango
Mandarin tree named ‘Tango’
PUBLIC DOMAIN
Patent expired September 6, 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
- PP17863
- Filed
- September 6, 2005
- Granted
- July 10, 2007
- Expires
- September 6, 2025
- Assignee
- UNIV CALIFORNIA
- Inventor
- ROOSE MIKEAL L; WILLIAMS TIMOTHY E
Abstract
A new mandarin variety called ‘Tango’ is distinguished by production of fruit that combines mid to late season maturity, moderately large fruit size, very smooth rind texture with a deep orange color, and a rich, sweet flavor. It further distinguishes itself by being very low seeded and easy to peel.
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 mandarin hybrid tree having the characteristics essentially as described and illustrated herein.
Read the full patent: US Plant Patent PP17863 in full — the complete specification, every figure, and the file history.