US Plant Patent PP26039
Scarlet King
Rheum plant named ‘Scarlet King’
UNDER PATENT
Still under patent. Protection ends May 10, 2034.
Twenty years from the filing date would end on October 31, 2033. This patent earned 191 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP26039
- Filed
- October 31, 2013
- Granted
- November 3, 2015
- Expires
- May 10, 2034
- Assignee
- SCONCE FARM LLC
- Inventor
- POSTLEWAIT MARILYN JEAN; POSTLEWAIT THOMAS W; POSTLEWAIT THOMAS PETER
Abstract
A new and distinct Rheum plant named ‘Scarlet King’ characterized by early dormancy break, exceptional frost resistance, and deep pearlescent red coloration of early season growth.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
It is claimed: 1. A new and distinct Rheum plant as herein illustrated and described.
Read the full patent: US Plant Patent PP26039 in full — the complete specification, every figure, and the file history.