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US Plant Patent PP17727

Explorer

Black raspberry plant named ‘Explorer’

PUBLIC DOMAIN

Patent expired June 2, 2025. This plant is in the public domain — anyone may propagate and sell it.

Twenty years from the filing date would end on April 27, 2025. This patent earned 36 days of term adjustment for delay at the Patent Office, which is why it runs longer.

Figure 1 of US plant patent PP17727, the photograph of Explorer printed in the patent.
Figure 1 from US Plant Patent PP17727, 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
PP17727
Filed
April 27, 2005
Granted
May 15, 2007
Expires
June 2, 2025
Assignee
TALLMAN PETER H
Inventor
TALLMAN PETER H

Abstract

A new and distinct primocane-fruiting (autumn-bearing) cultivar of black raspberry, Rubus occidentalis, named ‘Explorer.’ The ‘Explorer’ black raspberry was created as an F 2 generation seedling of a controlled cross between two unnamed black raspberry plants collected from uncultivated areas. ‘Explorer’ black raspberry is capable of providing a reliable and productive crop of large black raspberries on primocanes in late summer and early autumn when there are no fresh black raspberries available from other cultivars of black raspberry. The canes of ‘Explorer’ black raspberry also exhibit fewer thorns than canes of a typical black raspberry plant.

Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.

1. I claim a new and distinct primocane-fruiting black raspberry plant substantially as described and illustrated herein.

Read the full patent: US Plant Patent PP17727 in full — the complete specification, every figure, and the file history.