To provide a laminated polyester film to be stuck to a window which is excellent in antistatic properties, sliding properties and the like, and is therefore featured by excellence in prevention of contamination by adherence of a dust and the like, handling properties, and the like.

The laminated polyester film to be stuck to a window comprises a colored polyester film and a coating layer having a pencil hardness of H or higher on one surface thereof, where the coating layer has a thickness of at least 0.5 μm but up to 1/10 of the thickness of the polyester film and a surface resistance of 1×1011 Ω or less; the friction coefficient between the surface of the coating layer and the film surface on the opposite side of the coating layer is 0.4 or less; and the visible light transmittance of the whole film is 3-70%.