US Plant Patent PP20433
True Blue
Gentiana plant named ‘True Blue’
UNDER PATENT
Still under patent. Protection ends October 1, 2028.
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
- PP20433
- Filed
- October 1, 2008
- Granted
- October 20, 2009
- Expires
- October 1, 2028
- Assignee
- PROBST DARRELL R
- Inventor
- PROBST DARRELL R
Abstract
A new cultivar of Gentiana named ‘True Blue’, characterized by its sturdy, well-branched stems that are held upright, its ease of cultivation in ordinary garden soils, its semi-glossy leaves, its large blue flowers that open and are rich bright blue in color on both the inner and outer petal surfaces, and its hardiness in U.S.D.A. Zones 4 to 8.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
1. A new and distinct cultivar of Gentiana plant named ‘True Blue’ as herein illustrated and described.
Read the full patent: US Plant Patent PP20433 in full — the complete specification, every figure, and the file history.