Patent ID: 8580482

Claim:
A top coating composition coated on a photoresist film for forming a pattern by applying radiation, the composition comprising a resin dissolvable in a developer dissolved in a solvent containing a monohydric alcohol, wherein the resin is a copolymer comprising: a recurring unit (I) having a group shown by the following formula (2); and a recurring unit (II) having a sulfo group, the copolymer having a weight average molecular weight determined by gel permeation chromatography of 2,000 to 100,000, wherein R 3 in the formula (2) represents a fluoroalkyl group having 1 to 20 carbon atoms, wherein the recurring unit (II) having a sulfo group is produced using a copolymerizable compound represented by the following formula (3), wherein R represents a hydrogen atom, a methyl group, a hydroxymethyl group, or a trifluoromethyl group, A represents a single bond, a carbonyl group, a carbonyloxy group, an oxy carbonyl group, and B represents a single bond or a divalent organic group having 1 to 20 carbon atoms.