Sony Corporation v. Universal City Studios, 464 U.S. 417 (1984) (Supreme Court decision that manufacturers of video recorders can not be held liable when they are used to violate copyright).

Metro-Goldwyn-Mayer Studios, Inc. v. Grokster Ltd., 545 U.S. 913 (2005) (Internet services that facilitate file sharing of copyrighted materials can be held liable for infringement).

Cartoon Network L.P. v. CSC Holdings, Inc., 536 F.3d 121 (2d Cir. 2008) (holding that remote digital video recording did not violate television networks' copyrights)

Note: There are thousands of law review articles about copyright and several journals devoted exclusively to that topic.  See LexisNexis or LegalTrac.

Robert C. Denicola, "Access Controls, Rights Protection, and Circumvention: Interpreting the Digital Millennium copyright Act to Preserve Noninfringing Use," 31 Columbia Journal of Law & the Arts 209 (2008).

Andrea Frey, "To Sue or Not to Sue: Video-Sharing Web Sites, Copyright Infringement, and the Inevitability of Corporate Control," 2 Brooklyn Journal of Corporate, Financial & Commercial Law 167 (2007).

Michael T. Helfand, "When Mickey Mouse is as Strong as Superman: the Convergence of Intellectual Property Laws to Protect Fictional Literary and Pictorial Characters," 44 Stanford L. Rev. 623 (1992).

Joshua Keesan, "Let it Be? The Challenges of Using Old Definitions for Online Music Practices," 23 Berkeley Tech. L.J. 353 (2008).