US Plant Patent PP12543
Meiborco
Miniature rose plant named ‘Meiborco’
PUBLIC DOMAIN
Patent expired October 1, 2020. This plant is in the public domain — anyone may propagate and sell it.
Twenty years from the filing date would end on August 28, 2020. This patent earned 34 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP12543
- Filed
- August 28, 2000
- Granted
- April 9, 2002
- Expires
- October 1, 2020
- Assignee
- CP DELAWARE INC
- Inventor
- MEILLAND ALAIN A
Abstract
A new and distinct variety of rose plant of the dwarf Miniature Class is provided which abundantly forms attractive double dark red blossoms that sometimes appear to be nearly black in coloration. The growth habit is low compact and bushy. Decorative very dense medium green semi-glossy foliage is formed that contrasts nicely with the dark red blossoms. The new variety is well suited for pot forcing under greenhouse growing conditions.
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 Miniature rose plant characterized by the following combination of characteristics: (a) Exhibits a low compact and bushy growth habit, (b) Forms in abundance attractive double dark red blossoms, (c) Forms decorative very dense medium green semi-glossy foliage, and (d) Is well suited for pot forcing; substantially as herein shown and described.
Read the full patent: US Plant Patent PP12543 in full — the complete specification, every figure, and the file history.