Document Licensing Public Domain Public Use 
Biswajit Sarkar Copyright Blog
JULY 19, 2022
There’s a significant probability that someone already owns the rights to the content even if you cannot locate an explicit declaration stating that it is intended for public use. It would be preferable to obtain written authorization from the copyright owners before using the original content. Document right to use.
Patently-O
APRIL 6, 2023
In particular, the court first assumed that the work was copyrightable based upon the registration documents. WPL established that an earlier version of the SAS System, “SAS 76,” was in the public domain. WPL demonstrated that the SAS Language should be filtered because it is open and free for public use.
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