Display Screen or Portion Thereof with a Graphical User Interface

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

The FIGURE is a front view of a display screen or portion thereof with a graphical user interface showing our new design.

The uneven-length broken line around the graphical user interface illustrate a display screen or a portion thereof that forms no part of the claimed design. The faded area depicts portions of the graphical user interface that form no part of the claimed design. The even-length broken lines immediately adjacent to the faded area define the bounds of the claimed design and form no part thereof. The dotted line and tent within the faded area form no part of the claimed design. The unfaded, circular area within the faded area that is bound by an even-length broken line forms part of the claimed design, where the even-length broken line encompassing the unfaded, circular area defines the bounds of the claimed design and forms no part thereof.