US Plant Patent PP20235
White Knight
EXOTIC ORCHID ‘White Knight’
UNDER PATENT
Still under patent. Protection ends February 2, 2028.
Twenty years from the filing date would end on April 10, 2027. This patent earned 298 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP20235
- Filed
- April 10, 2007
- Granted
- August 25, 2009
- Expires
- February 2, 2028
- Assignee
- BARFIELD ROBERT GLEN
- Inventor
- BARFIELD ROBERT GLEN
Abstract
A new variety of orchid plant of the Oncidiinae Intergeneric group, Brassidium, named EXOTIC ORCHID ‘White Knight’, distinguished in part by a compact size, highly contrasted flower, and growing quickly from in-vitro culture to flowering.
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 orchid plant named EXOTIC ORCHID ‘White Knight’, substantially as illustrated and described herein.
Read the full patent: US Plant Patent PP20235 in full — the complete specification, every figure, and the file history.