Copyright Office regulations codified in the Code of Federal Regulations (CFR). These regulations are also known as Circular 96.

Chapter II--Copyright Office, Library of Congress Subchapter A—Copyright Office and Procedures Part 211--Mask Work Protection
Section	Title
211.1	General provisions
211.2	Recordation of documents pertaining to mask works
211.3	Mask work fees
211.4	Registration of claims of protection in mask works
211.5	Deposit of identifying material
211.6	Methods of affixation and placement of mask work notice
211.7	Reconsideration procedure for refusals to register

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