Well I do litigation and some of it involves copyright infringement suits. But I see that you are in the U.K., which does things entirely different from the U.S.- so I'm not sure how much advice I could offer.
It's exciting challenging work. I like it because I'm ADD and I need to constantly have fires under me and a gun to my head to be inspired to do my best work- and that's exactly what I get. The downside- sometimes I get burned out.
Good luck getting the job!