US Plant Patent PP17635

Blackfield

Persicaria plant named ‘Blackfield’

PUBLIC DOMAIN

Patent expired August 19, 2025. This plant is in the public domain — anyone may propagate and sell it.

Twenty years from the filing date would end on June 14, 2025. This patent earned 66 days of term adjustment for delay at the Patent Office, which is why it runs longer.

Figure 1 of US plant patent PP17635, the photograph of Blackfield printed in the patent. — Figure 1 from US Plant Patent PP17635, 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: PP17635
Filed: June 14, 2005
Granted: April 24, 2007
Expires: August 19, 2025
Assignee: FUTURE PLANTS LICENTIE BV
Inventor: GHYSELEN CHRIS

Abstract

A new and distinct cultivar of Persicaria plant named ‘Blackfield’, characterized by its upright and outwardly spreading plant habit; dark red-colored flowers; freely and continuous flowering habit; and good garden performance.

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 Persicaria plant named ‘Blackfield’, as illustrated and described.

Read the full patent: US Plant Patent PP17635 in full — the complete specification, every figure, and the file history.