US Plant Patent PP19903
Carteret
Blueberry plant named ‘Carteret’
UNDER PATENT
Still under patent. Protection ends September 26, 2026.
Twenty years from the filing date would end on December 19, 2025. This patent earned 281 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP19903
- Filed
- December 19, 2005
- Granted
- April 14, 2009
- Expires
- September 26, 2026
- Assignee
- BALLINGTON JAMES RALPH, ROOKS SUSAN DUKE
- Inventor
- BALLINGTON JAMES RALPH; ROOKS SUSAN DUKE
Abstract
Vaccinium corymbosum Linnaeus ‘Carteret’ is a new and distinct variety of blueberry plant that has the following unique combination of desirable features that are outstanding in a new variety. 1. Early-midseason ripening to follow ‘Reveille’. 2. Consistent very high yields of small to medium size fruit. 3. Very good picking scar, fruit color and quality. 4. Good fruit firmness and post harvest shelf-life. 5. Adaptation to mechanical harvesting for fresh fruit market outlets.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
1. A new and distinct variety of commercial blueberry plant ( Vaccinium corymbosum Linnaeus ) substantially as illustrated and described, characterized by its early-midseason ripening, very high yields, very good picking scar, fruit quality, and color, good firmness and post harvest shelf-life, small to medium fruit size, and adaptation to mechanical harvest for fresh fruit market outlets.
Read the full patent: US Plant Patent PP19903 in full — the complete specification, every figure, and the file history.