Display screen or portion thereof with a graphical user interface

[0001]The file of this patent contains at least one drawing/photograph executed in color. Copies of this patent with color drawing(s)/photograph(s) will be provided by the Office upon request and payment of the necessary fee.

[0002]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.

[0003]The FIGURE is a top plan view of a display screen or portion thereof with a graphical user interface.

[0004]The broken lines representing features of the display screen having a graphical user interface or portion thereof including the display screen itself form no part of the claimed design. The faded portions within the broken lines form no part of the claimed design. The dot-dash broken lines define bounds of the claimed design and form no part thereof. The background portions below the black rectangle within the dot-dash broken lines have the appearance of transparency