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US Plant Patent PP17540

Calypso

Aglaonema plant named ‘Calypso’

PUBLIC DOMAIN

Patent expired August 12, 2025. This plant is in the public domain — anyone may propagate and sell it.

Twenty years from the filing date would end on July 5, 2025. This patent earned 38 days of term adjustment for delay at the Patent Office, which is why it runs longer.

Figure 1 of US plant patent PP17540, the photograph of Calypso printed in the patent.
Figure 1 from US Plant Patent PP17540, 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
PP17540
Filed
July 5, 2005
Granted
March 27, 2007
Expires
August 12, 2025
Assignee
MUKUNDAN PARTHASARATHY, PARTHASARATHY GOPALASWAMY
Inventor
PARTHASARATHY GOPALASWAMY; MUKUNDAN PARTHASARATHY

Abstract

A new and distinct cultivar of Aglaonema plant named ‘Calypso’, characterized by its upright and outwardly arching plant form; vigorous growth habit; freely clumping habit; full, dense and bushy appearance; large glossy and twisting oblong leaves with acuminate apices; upper leaf surfaces dark green in color with gray green-colored chevrons interspersed with distinct golden yellow spots and blotches; lower leaf surfaces pale green in color with ivory white-colored midrib, spots and splashes; pale yellow to ivory white-colored leaf petioles; petiole wings with sparse and random green-colored spots; and tolerance to low temperatures.

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 Aglaonema plant named ‘Calypso’, as illustrated and described.

Read the full patent: US Plant Patent PP17540 in full — the complete specification, every figure, and the file history.