Display Screen or Portion Thereof with Transitional Graphical User Interface

The file of this patent contains a drawing executed in color. Copies of this patent with color drawings 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 transitional graphical user interface showing a first image of a first embodiment of our 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 of a display screen or portion thereof with transitional graphical user interface showing a first image of a second embodiment of our new design.

FIG. 7 is a front view showing a second image thereof.

FIG. 8 is a front view showing a third image thereof.

FIG. 9 is a front view showing a fourth image thereof; and,

FIG. 10 is a front view showing a fifth image thereof.

The dot-dash broken lines in the drawings show a display screen or portion thereof, and form no part of the claimed design.

The appearance of the transitional image sequentially transitions between the views of FIGS. 1 - 5 and FIGS. 6 - 10 . The process or period in which an image transitions to another forms no part of the claimed design.