20 The WIPO Copyright and Performances and Phonograms Treaties Implementation Act of 1998 amended section 101 by adding the definition of “WIPO Copyright Treaty.”  Pub.  L. No. 105-304, 112 Stat. 2860, 2861.  That definition is required to take effect upon entry into force of the WIPO Copyright Treaty with respect to the United States.  Pub.  L. No. 105-304, 112 Stat. 2860, 2877.

21 The WIPO Copyright and Performances and Phonograms Treaties Implementation Act of 1998 amended section 101 by adding the definition of “WIPO Performances and Phonograms Treaty.”  Pub.  L. No. 105-304, 112 Stat. 2860, 2862.  That definition is required to take effect upon entry into force of the WIPO Performances and Phonograms Treaty with respect to the United States.  Pub.  L. No. 105-304, 112 Stat. 2860, 2877.

22 The Visual Artists Rights Act of 1990 amended section 101 by adding the definition of “work of visual art.”  Pub.  L. No. 101-650, 104 Stat. 5089, 5128.

23 The Satellite Home Viewer Improvement Act of 1999 amended the definition of “a work made for hire” by inserting “as a sound recording” after “audiovisual work.”  Pub.  L. No. 106-113, 113 Stat. 1501, app.  I at 1501A-544.  The Work Made for Hire and Copyright Corrections Act of 2000 amended the definition of “work made for hire” by deleting “as a sound recording” after “audiovisual work.”  Pub.  L. No. 106-379, 114 Stat. 1444.  The Act also added a second paragraph to part (2) of that definition. Id. These changes are effective retroactively, as of November 29, 1999.

24 The WIPO Copyright and Performances and Phonograms Treaties Implementation Act of 1998 amended section 101 by adding the definitions of “WTO Agreement” and “WTO member country,” thereby transferring those definitions to section 101 from section 104A.  Pub.  L. No. 105-304, 112 Stat. 2860, 2862.  See also endnote 29, infra.

25 In 1980, the definition of “computer program” was added to section 101.  Pub.  L. No. 96-517, 94 Stat. 3015, 3028.

26 In 1990, the Architectural Works Copyright Protection Act amended subsection 102(a) by adding at the end thereof paragraph (8).  Pub.  L. No. 101-650, 104 Stat. 5089, 5133.

27 The Berne Convention Implementation Act of 1988 amended section 104(b) by redesignating paragraph (4) as paragraph (5), by inserting after paragraph (3) a new paragraph (4) and by adding subsection (c) at the end.  Pub.  L. No. 100-568, 102 Stat. 2853, 2855.  The WIPO Copyright and Performances and Phonograms Treaties Implementation Act of 1998 amended section 104 as follows:  1) by amending subsection (b) to redesignate paragraphs (3) and (5) as (5) and (6), respectively, and by adding a new paragraph (3); 2) by amending section 104(b), throughout; and 3) by adding section 104(d).  Pub.  L. No. 105-304, 112 Stat. 2860, 2862.

28 The WIPO Copyright and Performances and Phonograms Treaties Implementation Act of 1998 requires that subsection (d), regarding the effect of phonograms treaties, take effect upon entry into force of the WIPO Performances and Phonograms Treaty with respect to the United States.  Pub.  L. No. 105-304, 112 Stat. 2860, 2877.