US Plant Patent PP33115
Caddo
Blackberry plant named ‘Caddo’
UNDER PATENT
Still under patent. Protection ends December 31, 2039.
Twenty years from the filing date would end on December 19, 2039. This patent earned 12 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP33115
- Filed
- December 19, 2019
- Granted
- June 1, 2021
- Expires
- December 31, 2039
- Assignee
- UNIV ARKANSAS
- Inventor
- CLARK JOHN R
Abstract
Description and specifications of a new and distinct cultivar of blackberry plant named ‘Caddo’ which originated from seed produced by a hand-pollinated cross of ‘APF-45’ (U.S. Plant Pat. No. 22,449) x Ark. ‘2108T’ (non-patented, unreleased genotype). This new cultivar of blackberry plant can be distinguished by its large berries with very good fruit flavor, overall high fruit quality with excellent postharvest fruit-handling potential, early season ripening, consistent high yields, and excellent plant health.
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 ‘Caddo’, substantially as illustrated and described herein.
Read the full patent: US Plant Patent PP33115 in full — the complete specification, every figure, and the file history.