Patent Publication Number: US-D958802-S

Title: Display screen or portion thereof with a transitional graphical user interface

Description:
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. 
         FIG. 1  is a front view of a display screen or portion thereof with a transitional graphical user interface showing a first image of a first embodiment of the new design; 
         FIG. 2  is a front view showing a second image thereof; 
         FIG. 3  is a front view showing a third image thereof; 
         FIG. 4  is a front view showing a fourth image thereof; 
         FIG. 5  is a front view showing a fifth image thereof; 
         FIG. 6  is a front view showing a sixth image thereof; 
         FIG. 7  is a front view showing a seventh image thereof; 
         FIG. 8  is a front view showing an eighth image thereof; 
         FIG. 9  is a front view showing a ninth image thereof; 
         FIG. 10  is a front view showing a tenth image thereof; 
         FIG. 11  is a front view showing an eleventh image thereof; 
         FIG. 12  is a front view showing a twelfth image thereof; 
         FIG. 13  is a front view showing a thirteenth image thereof; 
         FIG. 14  is a front view showing a fourteenth image thereof; and 
         FIG. 15  is a front view showing a fifteenth image thereof; 
         FIG. 16  is a front view of a display screen or portion thereof with a transitional graphical user interface showing a first image of a second embodiment of the new design; 
         FIG. 17  is a front view showing a second image thereof; 
         FIG. 18  is a front view showing a third image thereof; 
         FIG. 19  is a front view showing a fourth image thereof; 
         FIG. 20  is a front view showing a fifth image thereof; 
         FIG. 21  is a front view showing a sixth image thereof; 
         FIG. 22  is a front view showing a seventh image thereof; 
         FIG. 23  is a front view showing an eighth image thereof; 
         FIG. 24  is a front view showing a ninth image thereof; 
         FIG. 25  is a front view showing a tenth image thereof; 
         FIG. 26  is a front view showing an eleventh image thereof; 
         FIG. 27  is a front view showing a twelfth image thereof; 
         FIG. 28  is a front view showing a thirteenth image thereof; 
         FIG. 29  is a front view showing a fourteenth image thereof; and, 
         FIG. 30  is a front view showing a fifteenth image thereof. 
       The appearance of the transitional graphical user interface transitions sequentially between the images shown in  FIGS. 1 to 15 , and between the images shown in  FIGS. 16 to 30 . 
       The process or period in which one image transitions to another forms no part of the claimed design. 
       Shading in the images indicates a contrast in appearance. 
       The outermost rounded rectangle broken line showing an outline of the display screen or portion thereof, and all other broken lines showing portions of the transitional graphical user interface, illustrate portions of the article that form no part of the claimed design.