US Plant Patent PP18294

HYMMAD I

Hydrangea macrophylla plant named ‘HYMMAD I’

PUBLIC DOMAIN

Patent expired May 1, 2026. This plant is in the public domain — anyone may propagate and sell it.

Twenty years from the filing date would end on February 6, 2026. This patent earned 84 days of term adjustment for delay at the Patent Office, which is why it runs longer.

Figure 1 of US plant patent PP18294, the photograph of HYMMAD I printed in the patent. — Figure 1 from US Plant Patent PP18294, reproduced as printed. Photographs in a plant patent are taken by the applicant. Reproduction of the patent document is permitted; the image is shown whole and uncropped for that reason.

The record

Patent number: PP18294
Filed: February 6, 2006
Granted: December 11, 2007
Expires: May 1, 2026
Assignee: UNIV GEORGIA RES FOUND
Inventor: DIRR MICHAEL A

Abstract

Hydrangea macrophylla, ‘HYMMAD I’ has pure white mophead inflorescences that remain white in the presence and absence of aluminum. Inflorescences mature to a iridescent lime green. The habit is rounded with strong stems that hold the flowers upright. The lustrous, dark green leaves are highly mildew resistant.

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 Hydrangea macrophylla plant substantially as herein described and illustrated.

Read the full patent: US Plant Patent PP18294 in full — the complete specification, every figure, and the file history.