Patent ID: 8802570

Claim:
A pattern forming method for forming a pattern having at least one of a recess and a protrusion of a curable composition by curing the curable composition disposed on a work substrate into a cured film in a state where a mold having a surface provided with at least one of a recess and a protrusion is substantially in contact with the curable composition, and separating the mold from the cured film, the method comprising: (i) forming a gas generation region containing a gas generator agent so that the gas generation region will be disposed in contact with both the mold and the cured film between the mold and the cured film; (ii) generating a gas from the gas generation region; and (iii) separating the mold from the cured film during or after the step of(ii), wherein the gas generation region is formed so that the curable composition will not generate a gas in the step of (ii).