1212.8 (B) Mask Work Is Based on or Incorporates a Preexisting Mask Work
If the mask work for which protection is sought is based on or incorporates a preexisting mask work, the applicant may make note of that in space 8, in addition to stating the new, original contribution that forms the basis of the claim. In such cases, the preexisting mask work may be described simply by the title or previous registration number.
• Modification of mask work contained in MW 12,348.
• Modification of XJ254.