The ornamental design for a suitcase, as shown and described.
FIG. 1 is a front perspective view of a suitcase showing my new design, with the handles in a closed configuration;
FIG. 2 is a front view of the suitcase shown in FIG. 1;
FIG. 3 is a back view of the suitcase shown in FIG. 1;
FIG. 4 is a side view of the suitcase shown in FIG. 1 (with the other side view being a mirror image thereof);
FIG. 5 is a top view of the suitcase shown in FIG. 1; and,
FIG. 6 is a front perspective view of the suitcase shown in FIG. 1, shown with the handles in an open configuration.
The dash-dot-dash broken lines illustrate the bounds of the claimed design. The remaining broken lines illustrate portions of the suitcase. None of the broken lines form part of the claimed design.
The long dash-short dash broken lines indicate the boundaries of the claim in the relevant drawings.