Anything published without a copyright notice still has a copyright. > Until March 1, 1989, a published work had to contain a valid copyright notice to receive

Anything published without a copyright notice still has a copyright. > Until March 1, 1989, a published work had to contain a valid copyright notice to receive protection under the copyright laws. But this requirement is no longer in force — works first published after March 1, 1989, need not include a copyright notice to gain protection under the law. https://fairuse.stanford.edu/overview/faqs/copyright-protection/ https://fairuse.stanford.edu/overview/faqs/copyright-protect...