as that the complainant must appear through domestic counsel or that
the complainant must deposit with the court or an administrative
office, or both, a copy of the work involved in the litigation; provided
that failure to comply with such requirements shall not affect the
validity of the copyright, nor shall any such requirement be imposed
upon a national of another Contracting State if such requirement is not
imposed on nationals of the State in which protection is claimed.

4. In each Contracting State there shall be legal means of
protecting without formalities the unpublished work of nationals of
other Contracting States.

5. If a Contracting State grants protection for more than one term
of copyright and the first term is for a period longer than one of the
minimum periods prescribed in Article IV, such State shall not be
required to comply with the provisions of paragraph 1 of this Article in
respect of the second or any subsequent term of copyright.

ARTICLE IV

1. The duration of protection of a work shall be governed, in
accordance with the provisions of Article II and this Article, by the
law of the Contracting State in which protection is claimed.

2. (a) The term of protection for works protected under this
Convention shall not be less that the life of the author and twenty-
five years after his death. However, any Contracting State which,
on the effective date of this Convention in that State, has limited
this term for certain classes of works to a period computed from this
first publication of the work, shall be entitled to maintain these