There are several ways to do this. One is to create a blank document, type all the pertinent information you want, name, year, copyright symbol then turn it into a custom shape or brush. Then it is just a quick click and size to embed it where you want.
You can even do this and make it an action for a single or whole folder of images. I would suggest if you are going to do this to also add to this an update of Metadata for copyright info too.
If you want even more style you can create a new document with a transparent background, your logo, copyright info and then save it. Create a new action which brings this document into your image as a smart object then you can have the color of your logo along with a faded white background and a completely editable smart object.
I am not unemployed, I am an Artist!!