Copyright
noun
著作 is "writing" or "authorship." The rights that writing has is what's known as copyright.
Note that 著作権 refers to copyright for anything, not just writing.
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own. Will help to know 著作 first, too.
著作権の対象となるかどうかに関わらず、他人の作品は使用しないでください。
I don’t want you guys to use someone else’s work regardless of whether or not it is subject to copyright.