US Plant Patent PP14353
Crape Myrtle plant named Red Filli
PUBLIC DOMAIN
Patent expired September 10, 2021. 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
- PP14353
- Filed
- September 10, 2001
- Granted
- December 9, 2003
- Expires
- September 10, 2021
- Inventor
- ZWETZIG GRETCHEN; FLEMING DAVID WHITMAN
No cultivar name of record
This patent does not name the plant, which is unusual for its date — by the mid-1990s nearly every plant patent carried a cultivar name. The grant identifies this one by its number and by a written description instead.
Nothing here is missing from our records: the patent itself states no name. Where one exists we show it, and we do not invent one.
Abstract
A new and distinct cultivar of dwarf winter hardy Lagerstroemia plant named 'Red Filli' is the result of a unique hybridization. This new and distinct cultivar is characterized primarily as to novelty by its extreme cold hardiness to Zone 4, its numerous sturdy bright red blooms, its compact spreading performance with heavy branching, its vigorous and uniform growth habit, and its floriferous nature form midsummer until frost.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
I claim: 1. A new and distinct cultivar of Lagerstroemia plant, as herein shown and described, characterized by its beautiful red flowers and refined foliage, its dwarf and compact spreading action, its vigor, and its extreme hardiness.
Read the full patent: US Plant Patent PP14353 in full — the complete specification, every figure, and the file history.