US Plant Patent PP27131
Niwot
Black raspberry plant named ‘Niwot’
UNDER PATENT
Still under patent. Protection ends July 18, 2034.
Twenty years from the filing date would end on March 25, 2034. This patent earned 115 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP27131
- Filed
- March 25, 2014
- Granted
- September 6, 2016
- Expires
- July 18, 2034
- Assignee
- TALLMAN PETER H
- Inventor
- TALLMAN PETER H
Abstract
A new and distinct primocane-fruiting (autumn-bearing) cultivar of black raspberry, Rubus occidentalis, named ‘Niwot’. The ‘Niwot’ black raspberry was created as a complex cross of two unnamed black raspberry plants collected from uncultivated areas. ‘Niwot’ black raspberry is capable of providing a reliable and productive crop of large black raspberries on primocanes in late summer and early autumn when there are no fresh black raspberries available from other commercial cultivars of black raspberry. ‘Niwot’ also provides a reliable and productive crop of black raspberries on any retained floricanes in late June and early July.
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 primocane-fruiting black raspberry plant substantially as described and illustrated herein.
Read the full patent: US Plant Patent PP27131 in full — the complete specification, every figure, and the file history.