This article is from the Copyright Law FAQ, by Terry Carroll with numerous contributions by others.
In addition to statutes passed by Congress, law also comes
in the form of regulations promulgated by the various federal agencies.
In the case of copyright, the regulations we're most interested in are
those promulgated by the Copyright Office.
Regulations become effective by publication of the regulation in the
Federal Register (Fed. Reg.). Like statutes, they are then periodically
codified, in this case in the Code of Federal Regulations (C.F.R.).
Usually, regulations are cited to the C.F.R. for the same reason that
statutes are usually cited to the U.S.C. However, the promulgation
documents as published in the Federal Register include not only the
regulation itself, but usually information justifying or explaining the
regulation, so occasionally the Fed. Reg. citation is used.
Here are some examples of citations to a regulation, in this case, to a
regulation preventing registration of a copyright in a blank form:
45 Fed. Reg. 63297, 63299 (Sep. 24, 1980). (Federal Register volume 45,
beginning on page 63297, with a pinpoint cite to page 63299.)
37 C.F.R. 202.1(c) (1992). (the same regulation, as codified in the