US Plant Patent PP23272
Koiro
Bougainvillea plant named ‘Koiro’
UNDER PATENT
Still under patent. Protection ends May 10, 2031.
Twenty years from the filing date would end on April 5, 2031. This patent earned 35 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP23272
- Filed
- April 5, 2011
- Granted
- December 25, 2012
- Expires
- May 10, 2031
- Assignee
- SUNTORY FLOWERS LTD, NAKANO MASAHIRO
- Inventor
- NAKANO MASAHIRO
Abstract
A new and distinct cultivar of Bougainvillea plant named ‘Koiro’, characterized by its compact, upright and mounding plant habit; moderately vigorous growth habit; relatively small leaves; freely flowering habit; vivid red purple-colored flower bracts; and good garden performance.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
1. A new and distinct Bougainvillea plant named ‘Koiro’ as illustrated and described.
Read the full patent: US Plant Patent PP23272 in full — the complete specification, every figure, and the file history.