Patent ID: 7316786

Claim:
A method of polishing a film to be polished comprising: a main laminate making step of making a main laminate, including: forming a first film that is to be polished onto a first substrate, the first film being patterned so as to have a plurality of first portions, the first portions being discretely distributed at respective positions along a surface of the first substrate; covering the first film with a first protective film; and forming onto the first protective film a first stopper film provided with a plurality of first openings at respective parts corresponding to respective positions of the first portions, each first opening being wider than a planar width of a corresponding first portion; and a main polishing step of polishing the first protective film and the first portions through the first openings of the first stopper film in the main laminate by a CMP method; wherein widths of the first openings of the first stopper film have a width distribution provided in the main laminate making step.