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The Patent Garden

US Plant Patent PP18391

Hopcorn

Hydrangea plant named ‘Hopcorn’

PUBLIC DOMAIN

Patent expired February 8, 2026. 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.

Figure 1 of US plant patent PP18391, the photograph of Hopcorn printed in the patent.
Figure 1 from US Plant Patent PP18391, 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
PP18391
Filed
February 8, 2006
Granted
January 1, 2008
Expires
February 8, 2026
Assignee
HOFSTEDE JACOBUS GERARDUS, HOFSTEDE WILHELMUS JACOBUS GER
Inventor
HOFSTEDE JACOBUS GERARDUS; HOFSTEDE WILHELMUS JACOBUS GER

Abstract

A hydrangea cultivar particularly distinguished by its bright pink inflorescences with cupped sepals, dark green leaves, and vigorous growth habit is disclosed.

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 hydrangea plant as shown and described herein.

Read the full patent: US Plant Patent PP18391 in full — the complete specification, every figure, and the file history.