US Plant Patent PP35552
APF-409T
Blackberry plant named ‘APF-409T’
UNDER PATENT
Still under patent. Protection ends April 14, 2043.
No term adjustment or disclaimer is recorded against this patent, so this is the full statutory term — twenty years from the filing date.

The record
- Patent number
- PP35552
- Filed
- April 14, 2023
- Granted
- December 19, 2023
- Expires
- April 14, 2043
- Assignee
- UNIV ARKANSAS
- Inventor
- CLARK JOHN R
Abstract
Description and specifications of a new and distinct cultivar of blackberry plant named ‘APF-409T’ which originated from seed produced by a hand-pollinated cross of Arkansas selections ‘A-2504T’ (an unpatented breeding selection) x ‘APF-295T’ (an unpatented breeding selection) is provided. This new cultivar of blackberry plant can be distinguished by its excellent plant health, thornless canes, strong primocane-fruiting tendency, and early season of fruit ripening on both floricanes and primocanes.
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 cultivar of blackberry plant named ‘APF-409T’, substantially as illustrated and described.
Read the full patent: US Plant Patent PP35552 in full — the complete specification, every figure, and the file history.