On appeal, Corley renewed his constitutional challenges, arguing that the DMCA overstepped limits in the Copyright Clause on the duration of copyright protection. The District Court rejected Corley's constitutional attacks on the statute and the injunction. Following a full non-jury trial, the District Court entered a permanent injunction barring Corley from posting DeCSS on his web site or from knowingly linking via a hyperlink to any other web site containing DeCSS. Eight motion picture studios brought an action against Corley seeking injunctive relief under the Digital Millennium Copyright Act (DMCA).

Corley also posted on his web site links to other web sites where DeCSS could be found. DeCSS was designed to circumvent 'CSS,' the encryption technology that motion picture studios place on DVDs to prevent the unauthorized viewing and copying of motion pictures. Corley posted a copy of the decryption computer program 'DeCSS' on his web site. § 1201(a)(1), differs from both of these anti-trafficking subsections in that it targets the use of a circumvention technology, not the trafficking in such a technology. § 1201(b)(1)is circumvention of technologies designed to permit access to a work but prevent copying of the work or some other act that infringes a copyright.

§ 1201(a)(2)is circumvention of technologies designed to prevent access to a work, and the focus of 17 U.S.C.S.

In other words, although both subsections prohibit trafficking in a circumvention technology, the focus of 17 U.S.C.S. § 1201(b)(1)covers those who traffic in technology that can circumvent protection afforded by a technological measure that effectively protects a right of a copyright owner under Title 17. § 1201(a)(2) those who traffic in technology that can circumvent a technological measure that effectively controls access to a work protected under Title 17, whereas 17 U.S.C.S.

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