1210 Registration Procedures
Generally, only one registration of a claim is permitted for the same version of a mask work fixed in either (I) an intermediate form of any semiconductor chip product, or (ii) a final form of any semiconductor chip product. 37 C.F.R. § 211.4 (C) (1). Notwithstanding that general rule, owners of mask works that are created by adding metal-connection layers to unpersonalized gate arrays may separately register the entire unpersonalized gate array as well as any custom metallization layers. 37 C.F.R. § 211.4 (C) (2).