Patent ID: 8101335

Claim:
A resist composition comprising (A) a polymer P1 comprising repeat units of the following general formulae (1a) and (2a), (B) a polymer having a structure containing one or both of a lactone ring and a hydroxyl group, and/or a structure derived from maleic anhydride, which polymer becomes soluble in an alkaline developer under the action of an acid, (C) a compound capable of generating an acid upon exposure to high-energy radiation, and (D) an organic solvent, wherein R 1a and R 1b are hydrogen or straight, branched or cyclic C 1 -C 10 alkyl, R 1a and R 1b may bond together to form a non-aromatic ring with the carbon atom to which they are attached, R 2 is hydrogen, methyl or trifluoromethyl, R 3 is hydrogen or an acid labile group, a1 and b1 are numbers satisfying 0<a1<1, 0<b1<1, and 0<a1+b1≦1.