US Constitution: Article I, Section 8 — Annotated.

Statutes: 15 U.S.C., Chapter 22 — Trademarks (Lanham Act).
Statutes: Copyright Statute — 17 USC §§110-810
Statutes: U.S. Code, Title 35 — Patent Act.

Regulations: 37 CFR 201-204 — Copyright regulations overview from Cornell.

Treaties: Berne Convention for the Protection of Literary and Artistic Works — From Cornell University Legal Information Institute. Full text of the Berne Convention, governing international copyright protections.
Treaties: General Agreement on Tariffs and Trade (GATT) 1994 — From the World Trade Organization (WTO).
WIPO Copyright Treaty — From the World Intellectual Property Organization.

Other Government Documents: Examination Guidelines for Computer-Related Inventions — 61 FR 7478 (February 28, 1996). The Guidelines are based on the PTO's current understanding of the law and are believed to be fully consistent with binding precedent of the Supreme Court, the Federal Circuit and the Federal Circuit's predecessor courts.
Statutes: 105th Congress - Digital Millennium Copyright Act Testimony — From THOMAS legislative services.
Statutes: 106th Congress - Digital Millennium Copyright Act Testimony — From THOMAS legislative services.
Statutes: American Inventor's Protection Act of 1999 — Public Law 106-113.
Statutes: Digital Millennium Copyright Act — Public Law 105-304 Signed by the President October 28, 1998.
Statutes: Digital Millennium Copyright Act: Designation by Service Provider of Agent for Notification of Claims of Infringement — The Digital Millennium Copyright Act amended the copyright law to provide limitations for service provider liability relating to material online.
Statutes: H.R. 2281, Digital Millennium Copyright Act — Enrolled version as sent to the President. Includes full text, legislative history, committee reports and Congressional Record references.
U.S. Copyright Office: Recent Legislation — Pending congressional legislation regarding copyrights.