Display screen or portion thereof with a graphical user interface

A portion of the disclosure of this patent document contains material which is subject to copyright protection. The copyright owner has no objection to the facsimile reproduction by anyone of the patent document or the patent disclosure, as it appears in the Patent and Trademark Office patent file or records, but otherwise reserves all copyright rights whatsoever.

The present application file contains at least one drawing executed in color. Copies of this patent with color drawing(s) will be provided by the Office upon request and payment of the necessary fee.

FIG. 1 is a front view of a display screen or portion thereof with a graphical user interface according to a first embodiment.

FIG. 2 is a front view of a display screen or portion thereof with a graphical user interface according to a second embodiment; and,

FIG. 3 is a front view of a display screen or portion thereof with a graphical user interface according to a third embodiment.

The broken lines in FIGS. 1-3 show portions of a display screen or portion thereof with a graphical user interface which form no part of the claimed design. The broken text in FIGS. 1-3 is for showing environment only and forms no part of the claimed design.