Coffee Filter

FIG. 1 is a side view illustrating a coffee filter; FIG. 2 is a cross-sectional view of the coffee filter taken in the direction of line 2 - 2 in FIG. 4 ; FIG. 3 is a perspective view of the coffee filter; FIG. 4 is a top view of the coffee filter; FIG. 5 is a bottom view of the coffee filter; FIG. 6 is a perspective view of the coffee filter in a use configuration with environment; and, FIG. 7 is a perspective view of the coffee filter in a use configuration with environment. The broken line arrows indicate the cross-sectional cut line in FIG. 4 and form no part of the claimed design. The broken lines and the unshaded areas adjacent to them in FIGS. 4 and 5 form no part of the claimed design. The broken lines in FIGS. 6 and 7 depict the environment of a cover that forms no part of the claimed design.