All product designs sold by hillcase are original designs.
All product copyrights of HILLCASE are owned by HILLGALLERY Company.
In accordance with current legal regulations, some copyright references to paintings appearing on our products are legal.
COPYRIGHT DURATION IS LIFE-PLUS-SEVENTY
Copyright endures for seventy years after an author’s death, until the calendar year end. This is the life-plus-seventy rule. For example, if an author died on 1 February 1980, copyright in that author’s works expires on 31 December 2050 and falls into the public domain on 1 January 2051. This rule applies to a work that is in some fixed form on or after 1 January 1978.
Once copyright has expired in a work, the work is in the public domain. It is no longer protected by copyright and may be used freely, without obtaining permission from or compensating the copyright owner.
https://www.copyrightlaws.com/a-simple-guide-to-u-s-copyright-law/