Generally, at least under US Law, copyright protection extends 70 years past the death ot the author/creator of the work.
It is possible that Charter has sent you a notice of copyright infringement.
I have not received a Spectrum copyright infringement notice.
The copyright notice and other cataloging data is usually on the reverse of the title page.
95 years from creation.
Same as copyright notice for anything else: Copyright, or copr. or circle-C, the date of copyright and the author or other copyright owner's name. E.g., "Copyright 2012 Walt Disney Productions, Inc."
Copyright term for software in India is 60 years from the date of publication.
It can be. Notification is not required for protection.
A notice can be added as soon as the project is complete, even before registration.
I have not received a notice of copyright infringement related to the use of spectrum.
depends on what it is
If you have received a notice of copyright infringement from Spectrum, it means they believe you have violated copyright laws by using or sharing protected material without permission.
Yes.