Ethics & Copyright
Copyrights come into play when some one steals your work and claims it to be their own.
Anything you write is copy-rite if you can prove its yours, and 70 years after you die people can use your work without permission.
Copyright ethics are basically, boundaries you set for yourself not to steal others work because frankly you wouldn't want someone else stealing your work so its basically the golden rule.
Patents are the Equivalent to a copyright only for a idea for an invention but, you have to pay for the patent.