US Plant Patent PP28701
Medusa
Allium plant named ‘Medusa’
UNDER PATENT
Still under patent. Protection ends February 13, 2036.
Twenty years from the filing date would end on January 19, 2036. This patent earned 25 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP28701
- Filed
- January 19, 2016
- Granted
- November 28, 2017
- Expires
- February 13, 2036
- Assignee
- WALTERS GARDENS INC, HANSEN HANS A
- Inventor
- HANSEN HANS A
Abstract
A new and distinct cultivar of ornamental onion plant named Allium ‘Medusa’ compact habit, glaucous, upright, stiff, strap-like, flattened, gray-green foliage with longitudinal twisting and numerous, tightly-clustered, purple flowers forming long-blooming globose umbels and scapes that typically begin development pointing toward the ground.
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 ornamental onion plant named Allium ‘Medusa’ as herein described and illustrated, suitable as a potted plant, for the garden, and for cut flower arrangements.
Read the full patent: US Plant Patent PP28701 in full — the complete specification, every figure, and the file history.