US Plant Patent PP18955
Seedless grape
PUBLIC DOMAIN
Patent expired September 24, 2024. 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
- PP18955
- Filed
- September 24, 2004
- Granted
- June 17, 2008
- Expires
- September 24, 2024
- Assignee
- BURNE PETER MICHAEL, TREZISE ROBERT GARRY
- Inventor
- TREZISE ROBERT GARRY; BURNE PETER MICHAEL
No cultivar name of record
This patent does not name the plant, which is unusual for its date — by the mid-1990s nearly every plant patent carried a cultivar name. The grant identifies this one by its number and by a written description instead.
Nothing here is missing from our records: the patent itself states no name. Where one exists we show it, and we do not invent one.
Abstract
The present invention relates to a seedless grape variety, which is a clone of ‘Chardonnay I10V1’ grape. A seedless variety has considerable advantages in wine-making in that the wine being produced can be left on the skins for longer than in the case of conventional cultivars, without developing the bitter taste associated with seeds.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
1. A new and distinct variety of seedless grape plant named ‘Chardonnay I10V1-S’, substantially as illustrated and described herein.
Read the full patent: US Plant Patent PP18955 in full — the complete specification, every figure, and the file history.