A notice embodied in the copies by a photomechanical or electronic
process so that it ordinarily would appear whenever the work is
performed in its entirety may be located: 
  + With or near the title
  + With the cast, credits, and similar information
  + At or immediately following the beginning of the work
  + At or immediately preceding the end of the work The notice on works
    lasting 60 seconds or less, such as untitled motion pictures or
    other audiovisual works, may be located: 
  + In all the locations specified above for longer motion pictures; and
  + If the notice is embodied electronically or photo-mechanically, on
    the leader of the film or tape immediately preceding the work.  For
    audiovisual works or motion pictures distributed to the public for
    private use, the locations include the above, and in addition: 
  + On the permanent housing or container

Pictorial, Graphic, and Sculptural Works

For works embodied in two-dimensional copies, a notice may be affixed
directly, durably, and permanently to: 
  + The front or back of the copies;
  + Any backing, mounting, framing, or other material to which the
    copies are durably attached, so as to withstand normal use.  For
    works reproduced in three-dimensional copies, a notice may be
    affixed directly, durably, and permanently to: 
  + Any visible portion of the work;
  + Any base, mounting, or framing or other material on which the copies
    are durably attached.

For works on which it is impractical to affix a notice to the copies directly or by means of a durable label, a notice is acceptable if it appears on a tag or durable label attached to the copy so that it will remain with it as it passes through commerce.

For works reproduced in copies consisting of sheet-like or strip
material bearing multiple or continuous reproductions of the work, such
as fabrics or wallpaper, the notice may be applied: 
  + To the reproduction itself;
  + To the margin, selvage, or reverse side of the material at frequent
    and regular intervals; or
  + If the material contains neither a selvage nor reverse side, to tags
    or labels attached to the copies and to any spools, reels, or
    containers housing them in such a way that the notice is visible in
    commerce.

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OMISSION OF NOTICE AND ERRORS IN NOTICE
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The 1976 Copyright Act attempted to ameliorate the strict consequences of failure to include notice under prior law.  It contained provisions that set out specific corrective steps to cure omissions or errors in notice.  Under these provisions, an applicant had 5 years after publication to cure omission of notice or certain errors.  Although these provisions are technically still in the law, their impact has been limited by the Berne amendment making notice optional for all works published on and after March 1, 1989.  There may still be instances, such as the defense of innocent infringement, where the question of proper notice may be a factor in assessing damages in infringement actions.