US Plant Patent PP28013
Sumatra
Calla lily plant named ‘Sumatra’
UNDER PATENT
Still under patent. Protection ends March 29, 2035.
Twenty years from the filing date would end on December 15, 2034. This patent earned 104 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP28013
- Filed
- December 15, 2014
- Granted
- May 9, 2017
- Expires
- March 29, 2035
- Assignee
- SANDE B V
- Inventor
- RANDAG CECILIUS JAN-JOCHEM
Abstract
‘Sumatra’ is a new variety of calla lily having inflorescences with a purple-colored spathe that produces 5-15 inflorescences per tuber. The inflorescence stems are about 40 cm in height, and the leaves are green with whitish spots and have a leathery texture.
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 variety of calla lily plant named ‘Sumatra’ as herein described and illustrated.
Read the full patent: US Plant Patent PP28013 in full — the complete specification, every figure, and the file history.