US Plant Patent PP23866
Ivory May
Peach tree named ‘Ivory May’
UNDER PATENT
Still under patent. Protection ends April 5, 2032.
Twenty years from the filing date would end on December 8, 2031. This patent earned 119 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP23866
- Filed
- December 8, 2011
- Granted
- September 3, 2013
- Expires
- April 5, 2032
- Assignee
- BRADFORD LOWELL GLEN
- Inventor
- BRADFORD LOWELL GLEN
Abstract
The present invention relates to a new and distinct variety of peach tree, Prunus persica, broadly characterized by a large size, vigorous, hardy, self-fertile, productive and regular bearing tree. The variety blooms between the early and mid season and requires about 550 chilling hours. The fruit matures under the ecological conditions described in the latter part of May, with first picking on May 20, 2011. The fruit is uniformly medium in size, a balance of acid and sugar in flavor, globose in shape, clingstone in type, firm and melting in texture, white in flesh color, and mostly red in skin color.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
I claim: 1. A new and distinct variety of peach tree, substantially as illustrated and described, that is most similar to ‘Ivory Duchess’ peach (U.S. Plant Pat. No. 17,282) by producing fruit that is white in flesh color, mostly red in skin color, and clingstone in type, but is distinguished therefrom by having reniform instead of globose leaf glands and by producing fruit that is somewhat acidic in flavor instead of sub-acidic, that is smaller in size, and that matures about fifteen days earlier.
Read the full patent: US Plant Patent PP23866 in full — the complete specification, every figure, and the file history.