Marker Pen

FIG. 1 is a top perspective view of a marker pen, showing my new design;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is an enlarged plan view of its top surface; and,

FIG. 8 is an enlarged plan view of its bottom surface.

The broken lines in the drawings depict portions of the marker pen that form no part of the claimed design.