Because the term of protection is usually measured by the life of the author rather than the copyright date of the item, it may seem that the copyright year is unimportant. However it gives an excellent indication of the currency of the materials, and does form the base line for measuring term of protection on certain works.
Knowing a textbook's copyright date helps readers understand how current the information in the book is. A more recent copyright date indicates that the content has been updated to reflect the latest information or research in the field. Conversely, an older copyright date may mean that the information in the textbook is outdated.
The most important factor in establishing if copyright protection exists it the date of creation/publication. In most cases anything published before 1923 is in the public domain. After that date you will need to do a bit of research to determine if a work is protected or not.
In many cases, the copyright date determines how long the work will be protected (in other cases, it has more to do with the date of death of the author). For non-fiction works, the copyright date is an easy way to tell if the information is reasonably current.
i don't know but that's a good book
Not necessarily. The release date can be well after the copyright date.
A corporate entity would not have a copyright date.
The copyright date of the original book is July 24th, 1954The copyright date of the movie is December 19th, 2001The copyright date of the video game is September 24th, 2002
2006.
The copyright date of Twilight is 2005.
No, a copyright date is the first date of publication and an imprint date can be many years later, e.g., a later edition based upon the original copyright date.
It should be in the edition notice, also known as the copyright page, on the reverse of the title page.
Each volume has its own copyright date.