What do I do if someone infringes my copyright protection?
Provided you have taken the steps above, your title
to the copyright should be easier to prove. Copyright will only be infringed
by the actual copying of your original work. If the alleged copier can
prove that he has produced the same work independently, without copying,
then this will not be viewed as breach of copyright.
Quite often, it will be easier to resolve the matter
with the infringing party and it may be that some sort of licensing
agreement could be reached through which you would receive royalties.
If this is not an option then you will need to take action through the
courts where injunctions and damages are available.