US Plant Patent PP19623
Blue Ivory
Hosta plant named ‘Blue Ivory’
UNDER PATENT
Still under patent. Protection ends June 30, 2027.
Twenty years from the filing date would end on March 12, 2027. This patent earned 110 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP19623
- Filed
- March 12, 2007
- Granted
- January 13, 2009
- Expires
- June 30, 2027
- Assignee
- WALTERS GARDENS INC, LUCAS KLINKHAMER
- Inventor
- MEYER WILLIAM J
Abstract
A new and distinct Hosta plant named ‘Blue Ivory’ characterized by elliptic to cordate leaves having wide light creamy-colored margins and blue-green centers, vertical flower scapes with medium lavender flowers above foliage, suitable for landscape, potted culture, or cut flower arrangements.
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 ornamental Hosta plant named ‘Blue Ivory’ as herein described and illustrated, with elliptic to cordate leaves having wide light creamy-colored margins and blue-green centers, suitable as a potted plant, for the garden, and for cut flower arrangements.
Read the full patent: US Plant Patent PP19623 in full — the complete specification, every figure, and the file history.