US Plant Patent PP24638
Clockwork
Blueberry plant named ‘Clockwork’
UNDER PATENT
Still under patent. Protection ends August 21, 2032.
Twenty years from the filing date would end on March 12, 2032. This patent earned 162 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP24638
- Filed
- March 12, 2012
- Granted
- July 15, 2014
- Expires
- August 21, 2032
- Inventor
- BRAZELTON DAVID M; WAGNER ADAM L
Abstract
The new blueberry plant variety ‘Clockwork’ is provided. ‘Clockwork’ is a commercial variety with excellent machine harvest characteristics, and is intended for the processed foods market. The variety has a concentrated mid-season ripening schedule, with the potential to be harvested only once per season. ‘Clockwork’ holds up well in freezer trials, with excellent flavor and texture. The plant is vigorous, with an upright growth habit, and has an estimated chilling requirement of 800 to 1,000 hours.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
The invention claimed is: 1. A new and distinct variety of blueberry plant named ‘Clockwork’, substantially as illustrated and described herein.
Read the full patent: US Plant Patent PP24638 in full — the complete specification, every figure, and the file history.