It can be. It can also be artworks, choreography, or architecture designed by others. It can also be any of these works created by you.
If something is in the public domain, then it is not copyrighted. Creative commons also has a license for any software developer who wants to let others reuse their code.
The other people could have been the actual owner of the material and due to that it means they are allowed to upload there own work. However, others could have a licence to use the copyrighted material from the owner of the material. The others also may have found a way to classify it under fair use.
We created a copyrighted report for a client. How do we prevent said client from our report and giving it to others?
You can use others' protected material if you have an exemption in the law or a license from the copyright holder.
Some photos on Flickr are copyrighted, others are not.
The exact wording of translated piece of material may be copyrighted. The original story is likely out of copyright if it is several hundred years old.
There are two types of software that meet your description:public domain software, this is software that is not covered by copyright law; it can be modified in any way desired and the resulting program can be either redistributed in the public domain or copyrighted as a completely new work.opensource software, this is software that has been copyrighted and is distributed under an opensource licence that permits modification and redistribution under an opensource licence, but prohibits copyrighting the resulting program and thus preventing others from also modifying your work.
There are two types of software that meet your description:public domain software, this is software that is not covered by copyright law; it can be modified in any way desired and the resulting program can be either redistributed in the public domain or copyrighted as a completely new work.opensource software, this is software that has been copyrighted and is distributed under an opensource licence that permits modification and redistribution under an opensource licence, but prohibits copyrighting the resulting program and thus preventing others from also modifying your work.
There are two types of software that meet your description:public domain software, this is software that is not covered by copyright law; it can be modified in any way desired and the resulting program can be either redistributed in the public domain or copyrighted as a completely new work.opensource software, this is software that has been copyrighted and is distributed under an opensource licence that permits modification and redistribution under an opensource licence, but prohibits copyrighting the resulting program and thus preventing others from also modifying your work.
If its an offence to copy copyrighted products, it will be an offence to distribute them. You can be an accessory to the original offence.
To use others' copyrighted works, you need an exemption in the law (such as fair use) or permission from the copyright holder.
Yes, Edwin Landseer's works are copyrighted. He assigned the rights to his works to others prior to his death, and these people and their heirs have maintained the copyrights on his works.