Case for portable electronic device

FIG. 1 is a front/right-side/top perspective view of a case for portable electronic device showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left-side elevational view thereof;

FIG. 5 is a right-side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The dot-dash broken lines represent a boundary of the claimed design. The dash-dash broken lines depict unclaimed environment. The broken lines form no part of the claimed design.