IP Actions - Where to Start?

Sun Tzu: You should choose carefully the ground on which you wish to fight.  

Just like the motorist asking directions from an Irish farmer, in copyright litigation the answer often is, "I would not start from here, if I were you." 

Copyright court actions are to be avoided if possible as nothing is straightforward. You must prove that you own the copyright which can be a lot harder than it sounds. It involves getting assignments or licences from contributors.