US Plant Patent PP20109

WF-AT1

Shantung maple tree named ‘WF-AT1’

UNDER PATENT

Still under patent. Protection ends October 27, 2027.

Twenty years from the filing date would end on October 2, 2027. This patent earned 25 days of term adjustment for delay at the Patent Office, which is why it runs longer.

Figure 1 of US plant patent PP20109, the photograph of WF-AT1 printed in the patent. — Figure 1 from US Plant Patent PP20109, 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: PP20109
Filed: October 2, 2007
Granted: June 23, 2009
Expires: October 27, 2027
Assignee: WORTHINGTON FARMS INC
Inventor: WORTHINGTON MICHAEL W

Abstract

‘WF-AT1’ is a new and distinct cultivar of Acer truncatum that is noted for its consistent orange-red autumn leaf color; its exceptional landscape stress tolerance; and its compact, round-canopied form with ascending branches.

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

1. A new and distinct tree of Acer truncatum named ‘WF-AT1’ substantially as herein shown and described, characterized particularly as to novelty by its consistent display of orange-red autumn leaf color, even in warm temperate climates.

Read the full patent: US Plant Patent PP20109 in full — the complete specification, every figure, and the file history.