If I design a template for a corporate client and sell it to them is there a
way to copyright it so they have exclusive ownership of 'look and feel'?
I don't believe we have any lawyers here to give advice on that sort of thing,
but with intellectual property like this, you own the copyright so long as you
haven't signed it away to the client. In the event of a legal dispute, your
claim may be stronger (and cause the other team's lawyers to back off more
quickly) if you've actually registered the work with the copyright office, but
it's not strictly necessary, I'm pretty sure. If your lawyer tells you
different, go with his or her advice though.
Is there any way to prevent "unauthorized" people from using the template? Not
really, other than the threat of a lawsuit for copyright infringement if you
catch them at it and figure it's worth the trouble of suing them.
Aside from the time producting the template, can I also charge a licencing
fee for clients to use exclusively throughout their organisation?
You can charge them whatever you figure they'll pay for. Look at the silly
fees we're constantly getting whacked for by banks and telcos. I get nicked
five bucks a month for the *privilege* of getting a bill from mine.
And the banks and telcos are still in business. Either they all practice the
same rape and pillage act, so there's no advantage in moving, or everybody's as
much an idiot as I am for putting up with it. <g>