US Plant Patent PP20259
Sunviopapu
Viola plant named ‘Sunviopapu’
UNDER PATENT
Still under patent. Protection ends January 25, 2028.
Twenty years from the filing date would end on September 21, 2027. This patent earned 126 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP20259
- Filed
- September 21, 2007
- Granted
- September 1, 2009
- Expires
- January 25, 2028
- Assignee
- SUNTORY FLOWERS LTD
- Inventor
- TAKAMURA NAOTO
Abstract
A new and distinct cultivar of Viola plant named ‘Sunviopapu’, characterized by its compact and mounding plant habit; freely branching habit; freely flowering habit; and dark violet-colored flowers.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
1. A new and distinct Viola plant named ‘Sunviopapu’ as illustrated and described.
Read the full patent: US Plant Patent PP20259 in full — the complete specification, every figure, and the file history.