When is a work protected and how long do copyrights last?
A work is under copyright protection from the moment it is created, that
is, the protection by copyrights begins at the time of the creation of
a work. Copyright protection stems from the act of creation of a work automatically; thus the enjoyment of copyrights does not depend on any formality.
In Japan, the term of copyrights for a particular work depends on several factors, including whether it has been made public under a true name, or under a pseudonym or as an anonymous work. In principle, copyrights protection lasts for the life of the author plus additional 50 years after the author’s death. On the other
hand, as for the term of protection for a cinematographic work, its copyrights
continue to exist, in principle, until the end of the 70-year period following
the making public of the work.
Kaneda Copyright Agency
For proper copyright management in Japan