US Plant Patent PP21556
PAC 941
Plum almond tree named ‘PAC 941’
UNDER PATENT
Still under patent. Protection ends December 12, 2028.
Twenty years from the filing date would end on January 15, 2029, but this patent ends 34 days earlier — a terminal disclaimer gives term back. A source that calculates twenty years from filing would tell you this plant is still protected when it is already free.

The record
- Patent number
- PP21556
- Filed
- January 15, 2009
- Granted
- December 7, 2010
- Expires
- December 12, 2028
- Assignee
- AGROMILLORA IBERIA SA
- Inventor
- PINOCHET JORGE
Abstract
A new and distinct plum almond hybrid cultivar for rootstock use that originated as a pollinated seedling as provided. This new invention (cultivar) is particularly well suited for use as a plum, peach, nectarine, apricot and almond rootstock. It is found that this new invention (cultivar) exhibits good root anchorage as well as a significantly reduced tendency to form unwanted suckers.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
1. A new distinct cultivar of plum almond tree exhibiting the following combination of characteristics: a. superior rooting anchorage when compared to ‘Marianna 2624’ (non patented in U.S.); b. less propensity to form suckers than most plum rootstocks; c. aptitude to serve well as a rootstock for plums, peaches, nectarines, almonds and apricots; and d. outstanding adaptation to limiting soil conditions, especially water logging and calcareous soil.
Read the full patent: US Plant Patent PP21556 in full — the complete specification, every figure, and the file history.