As Dave has clarified Copyright is not really something we would be covered by at all, more IP protection is our thing
ACID web site will give you all the info you need about IP Protection, although you need to be a member to get to the online resources.
Interestingly though, people say things can not be owned in woodturning, nothing in new etc etc etc. In the latest copy of ACID magazine for members there is a case study of two ceramics companies, both selling simple white plates with a Japanese cherry blossom/flower design that looked very similar if not almost identical.
The company who first put the design on their plates took the other to court, the judge ruled that the second company had breached Intellectual Property law and instructed them to pay damages and remove the design. If you saw the design you would think ' well that is just a painting of a plant/flower'. I am not able to post the article here as I would be breaching ACID's copyright, something I don;t think I want to do. However I will contact them and ask if I can post it with their permission.
Now the cost to take someone to task is a rich persons sport (unless you are a member of ACID) in which case you have them in your corner, the reason however I raise this, is that if like me you want to include designs of blossom etc etc in your work you need to use licence free designs or come up with you own. Especially if you are say writing articles or books for money, you don't want some national company who's design you have ripped off sending you a letter and asking for compensation.
Unlikely anything will happen to small fish like us but firstly it is good to be aware of the law and adhere to it (if you are making money from your turning) and secondly and more importantly for me is to come up with our own designs as a place of pride instead of ripping others off.
The use or designs for money is wholly different to copying for our own development for non profit, even if you did sell the odd piece I don't anyone would waste the money on it, I am talking more about the mass production and magazine writing etc etc.