If, as a condition of protecting the rights of producers of phonograms, or of performers, or both, in relation to phonograms, a Contracting State, under its domestic law, requires compliance with formalities, these shall be considered as fulfilled if all the copies in commerce of the published phonogram or their containers bear a notice consisting of the symbol ℗, accompanied by the year date of the first publication, placed in such a manner as to give reasonable notice of claim of protection...
If, as a condition of protecting the producers of phonograms, a Contracting State, under its domestic law, requires compliance with formalities, these shall be considered as fulfilled if all the authorized duplicates of the phonogram distributed to the public or their containers bear a notice consisting of the symbol ℗, accompanied by the year date of the first publication, placed in such manner as to give reasonable notice of claim of protection...
In the case of reproductions of works specified in subsection (n) of section 5 of this title ["Sound recordings"] , the notice shall consist of the symbol ℗, (the letter P in a circle), the year of first publication of the sound recording, and the name of the owner of copy right in the sound recording, or an abbreviation by which the name can be recognized, or a generally known alternative designation of the owner...
If a notice appears on the phonorecords, it shall consist of the following three elements:
(1) the symbol ℗ (the letter P in a circle); and
(2) the year of first publication of the sound recording; and
(3) the name of the owner of copyright in the sound recording, or an abbreviation by which the name can be recognized, or a generally known alternative designation of the owner; if the producer of the sound recording is named on the phonorecord labels or containers, and if no other name appears in conjunction with the notice, the producer’s name shall be considered a part of the notice.
^Statement of Marybeth Peters, United States Register of Copyrights, before the Subcommittee on Courts, the Internet, and Intellectual Property, Committee on the Judiciary (July 31, 2007).