US Plant Patent PP17716
Kerbelmilk
Primula plant named ‘Kerbelmilk’
PUBLIC DOMAIN
Patent expired October 3, 2025. This plant is in the public domain — anyone may propagate and sell it.
No term adjustment or disclaimer is recorded against this patent, so this is the full statutory term — twenty years from the filing date.

The record
- Patent number
- PP17716
- Filed
- October 3, 2005
- Granted
- May 8, 2007
- Expires
- October 3, 2025
- Assignee
- KERLEY DAVID W, KERLEY PRISCILLA G
- Inventor
- KERLEY DAVID W; KERLEY PRISCILLA G
Abstract
A new and distinct cultivar of Primula plant named ‘Kerbelmilk,’ characterized by its upright, compact, and uniform plant habit; large, double, nonfragrant and cream-colored flowers that are held upright on strong and erect peduncles; early flowering in natural season; fast production suitable for 9 cm to 12 cm pots; an enlarged calyx which forms a green collar around the flower; and tolerance to low temperatures.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
1. A new and distinct cultivar of Primula plant named ‘Kerbelmilk,’ as illustrated and described.
Read the full patent: US Plant Patent PP17716 in full — the complete specification, every figure, and the file history.