Briefcase

FIG. 1 is a front perspective view of the briefcase comprising the present invention; FIG. 2 is a front elevation view thereof; FIG. 3 is a rear elevation view thereof; FIG. 4 is a right side view thereof; FIG. 5 is a left side view thereof; FIG. 6 is a top view thereof; and, FIG. 7 is a bottom view thereof. Broken lines shown in the drawings illustrate stitching presented as part of the claimed design.