The EFF has published a great paper that summarizes the Unintended Consequences of the DMCA (Digital Millennium Copyright Act).

It is available as a PDF file or as a Googled HTML document.

Since they were enacted in 1998, the “anti-circumvention” provisions of the Digital Millennium Copyright Act (“DMCA”), codified in section 1201 of the Copyright Act, have not been used as Congress envisioned. Congress meant to stop copyright pirates from defeating anti-piracy protections added to copyrighted works, and to ban “black box” devices intended for that purpose.

In practice, the anti-circumvention provisions have been used to stifle a wide array of legitimate activities, rather than to stop copyright piracy.

Since they were enacted in 1998, the “anti-circumvention” provisions of the Digital Millennium Copyright Act (“DMCA”), codified in section 1201 of the Copyright Act, have not been used as Congress envisioned. Congress meant to stop copyright pirates from defeating anti-piracy protections added to copyrighted works, and to ban “black box” devices intended for that purpose.

In practice, the anti-circumvention provisions have been used to stifle a wide array of legitimate activities, rather than to stop copyright piracy. As a result, the DMCA has developed into a serious threat to three important public policy priorities:

Section 1201 Chills Free Expression and Scientific Research.

Experience with section 1201 demonstrates that it is being used to stifle free speech and scientific research. The lawsuit against 2600 magazine, threats against Princeton Professor Edward Felten’s team of researchers, and prosecution of Russian programmer Dmitry Sklyarov have chilled the legitimate activities of journalists, publishers, scientists, students, programmers, and members of the public.

Section 1201 Jeopardizes Fair Use.

By banning all acts of circumvention, and all technologies and tools that can be used for circumvention, section 1201 grants to copyright owners the power to unilaterally eliminate the public’s fair use rights. Already, the music industry has begun deploying “copy-protected CDs” that promise to curtail consumers’ ability to make legitimate, personal copies of music they have purchased.

Section 1201 Impedes Competition and Innovation.

Rather than focusing on pirates, many copyright owners have chosen to use the DMCA to hinder their legitimate competitors. For example, Sony has invoked section 1201 to protect their monopoly on Playstation video game consoles, as well as their “regionalization” system limiting users in one country from playing games legitimately purchased in another.

This document collects a number of reported cases where the anti-circumvention provisions of the DMCA have been invoked not against pirates, but against consumers, scientists, and legitimate competitors. It will be updated from time to time as additional cases come to light.