Display Panel or Portion Thereof with Graphical User Interface

This 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.

FIG. 1 is a front view of a display panel or portion thereof with graphical user interface according to our new design; and,

FIG. 2 is another front view thereof shown with the addition of environmental subject matter.

The dot-dash broken line represents a display panel or portion thereof and forms no part of the claimed design. The remaining dash-dash broken lines depict portions of the graphical user interface that form no part of the claimed design. The multiplication, subtraction, and equal-sign mathematical symbol features in each figure form part of the claimed design as shown.