US Plant Patent PP16113
Britt-Marie Crawford
Ligularia plant named ‘Britt-Marie Crawford’
PUBLIC DOMAIN
Patent expired October 16, 2023. This plant is in the public domain — anyone may propagate and sell it.
Twenty years from the filing date would end on November 14, 2022. This patent earned 336 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP16113
- Filed
- November 14, 2002
- Granted
- November 15, 2005
- Expires
- October 16, 2023
- Assignee
- CRAWFORD JAMES
- Inventor
- CRAWFORD JAMES
Abstract
Ligularia dentata ‘Britt-Marie Crawford’ is a new and distinct cultivar of Ragwort with very dark purple brown foliage that remains effective throughout the growing season, and effective as a potted plant or landscape specimen or mass for the bold foliage effect and colorful yellow-orange glower display.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
1. I claim a new and distinct Ragwort plant named ‘Britt-Marie Crawford’, as described and illustrated.
Read the full patent: US Plant Patent PP16113 in full — the complete specification, every figure, and the file history.