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US Plant Patent PP16570

SunDak

Pekin lilac tree named ‘SunDak’

PUBLIC DOMAIN

Patent expired August 6, 2024. This plant is in the public domain — anyone may propagate and sell it.

Twenty years from the filing date would end on March 18, 2024. This patent earned 141 days of term adjustment for delay at the Patent Office, which is why it runs longer.

Figure 1 of US plant patent PP16570, the photograph of SunDak printed in the patent.
Figure 1 from US Plant Patent PP16570, 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
PP16570
Filed
March 18, 2004
Granted
May 23, 2006
Expires
August 6, 2024
Assignee
NDSU RES FOUNDATION
Inventor
HERMAN DALE E; REDLIN SCOTT C; CHAPUT LARRY J

Abstract

‘SunDak’ is a new cultivar of Syringa pekinensis, Pekin lilac tree. This new cultivar has a coppery-orange exfoliating bark pattern that separates into shaggy curls; large, abundantly produced creamy-white flower panicles; attractive seed capsules; upright broadly-oval to rounded form; typically grows multiple-trunked and with improved winter hardiness.

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

1. A new and distinct Syringa pekinensis (Pekin lilac) tree as shown and described herein.

Read the full patent: US Plant Patent PP16570 in full — the complete specification, every figure, and the file history.