US Plant Patent PP26980
20123-57D
Calendula plant named ‘20123-57D’
UNDER PATENT
Still under patent. Protection ends January 16, 2035.
Twenty years from the filing date would end on September 29, 2034. This patent earned 109 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP26980
- Filed
- September 29, 2014
- Granted
- July 26, 2016
- Expires
- January 16, 2035
- Assignee
- NISHIKAWA KOICHIRO
- Inventor
- NISHIKAWA KOICHIRO
Abstract
A new cultivar of Calendula plant, ‘20123-57D’, that is characterized by its compact plant habit with strong stems and thick leaves, its double inflorescences with double ray florets that are light yellow in color on the upper surface and yellow (greyed-purple when mature) and suffused with greyed red on the lower surface, its disk florets that are greyed-purple in color and present on about 50% of the inflorescences its long flowering time; blooming for 9 months from spring into winter in Noordwijkerhout, The Netherlands, its very high tolerance to powdery mildew, its very high tolerance to heat and cold, withstanding temperatures below −20° C. in the winter, and its ability to be readily propagated by stem cuttings.
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 variety of Calendula plant named ‘20123-57D’ as described and illustrated herein.
Read the full patent: US Plant Patent PP26980 in full — the complete specification, every figure, and the file history.