US Plant Patent PP26815
Pronne
Rose rootstock named ‘Pronne’
UNDER PATENT
Still under patent. Protection ends June 26, 2034.
Twenty years from the filing date would end on December 31, 2033. This patent earned 177 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP26815
- Filed
- December 31, 2013
- Granted
- June 14, 2016
- Expires
- June 26, 2034
- Assignee
- ROSAFLOR B V
- Inventor
- VAN DE POL PETER A
Abstract
A new and distinct rose plant is provided which is particularly well suited for service as a rootstock for a rose scion cultivar. More specifically, when so used the scion cultivar exhibits a propensity to yield an increase in biomass and the promotion of faster bud release when compared to the results achieved when the scion cultivar is grown on its own roots or on a standard rootstock, such as ‘Natal Briar’. Both higher production rates combined with improved quality in the scion variety are facilitated. The new rose plant displays an upright growth habit with vigorous growth. Small single pink changing to near white cup-shaped blossoms are formed having five generally heart-shaped petals. Orange reproductive organs are prominently displayed at the centers of the blossoms. Medium green leaflets with finely serrated margins primarily towards the tips of leaflets and a matte upper surface are displayed.
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 rose plant characterized by the following characteristics: (a) displays an upright growth habit with vigorous growth, (b) forms small single pink changing to near white cup-shaped blossoms having five generally heart-shaped petals with the prominent display of orange reproductive organs at the center of the blossoms, (c) exhibits medium green leaflets with finely serrated margins having a matte upper surface, and (d) when used as a rootstock for a cut rose scion variety exhibits a propensity to yield an increase in biomass and the promotion of faster bud release for the scion variety; substantially as shown and described.
Read the full patent: US Plant Patent PP26815 in full — the complete specification, every figure, and the file history.