Copyright
From DPCanadaWiki
In general, a copyright is an exclusive legal right to control the distribution or other use of a creative work such as an article, book, musical composition, etc. The duration of a copyright varies depending on the legal jurisdiction and particular copyright law applicable to the work.
PGC hosts, and thus DPC processes, mostly works in the Public Domain in Canada, meaning either they are government publications (which cannot be copyrighted), the holders of the copyrights have relinquished their rights to the Public Domain, or most commonly, the copyrights associated with the works have expired. However, PGC hosts some volumes and DPC has processed volumes that the copyright holder has given PGC the right to distribute without placing the work into the public domain.
