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Basics: Limitations |
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Temporal
Copyright protection is limited in time. Many countries have adopted a term of protection that starts at the time of the creation of the work and ends 50 years (in some cases 70 years) after the death of the author. Under some national laws exist exceptions either for certain kinds of creations or for certain uses. After the protection has expired works pass into the public domain. In recent years a tendency towards the lengthening of the term of protection has emerged.
Geographic
The owner of a copyrighted work is protected against acts restricted by copyright under the law of a certain country. To gain protection against such acts in other countries he must refer to the respective national legislation. If both countries are members of one of the international conventions on copyright, the practical problems arising from this geographical limitation are eased.
Non-Material Works
In some countries works that are not fixed in some material form are excluded from copyright protection. Also under certain national legislations, the texts of laws and decisions of courts and administrative bodies cannot be copyrighted (which is possible in several countries; then the government is the owner of the copyright in such works and can exercise his rights in accordance with the public interest).
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1996 WIPO Copyright Treaty (WCT)
The
1996  WIPO
Copyright Treaty, which focused on taking steps to protect copyright
"in the digital age" among other provisions 1) makes clear
that computer programs are protected as literary works, 2) the
contracting parties must protect databases that constitute
intellectual creations, 3) affords authors with the new right of
making their works "available to the public", 4) gives
authors the exclusive right to authorize "any communication to
the public of their works, by wire or wireless means ... in such a
way that members of the public may access these works from a place
and at a time individually chosen by them." and 5) requires the
contracting states to protect anti-copying technology and copyright
management information that is embedded in any work covered by the
treaty. The WCT is available on:  http://www.wipo.int/documents/en/diplconf/distrib/94dc.htm
 http://www.wipo.int/documents/en/diplconf/dis...
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